16. True Explain your reasoning. 18. c. a If the critical value is less than the obtained value, what should you do? d. b, In regression, the criterion variable is also known as the ____________. Graph the equation using the slope and the $y$-intercept. c. y intercept d. -.86, Which of the following is the strongest correlation? A capacitor is an electronic device that stores an electrical charge. c. 56% a. Reject the null hypothesis; at least two groups differ in the average number of successful free throws that they completed. B. .45 with 5 catagories and 100 observations, what is the expected frequency for a one- sample chi square test for each of the categories? The higher the absolute value of your correlation coefficient, the worse your predictive power is. If a simple Pearson correlation value = .685, what percentage of variance is ACCOUNTED for? a. X The obtained value (.467) is greater than the critical value (.296) so it can be concluded that the relationship between the two variables occurred by something other than chance (the treatment effect). Select one: If b = -.75, the correlation between X and Y is, If the regression line has a negative slope, b would be, 25. Vision Statements - Where You're Going. If there is almost no difference between what is observed and what is expected, your chi-square value will be _______. d. b, Which of the following symbols is associated with the independent variable in the regression equation? Students also viewed. b. What would you say to him in response to his idea? 2- There is a strong negative linear relationship between the variables. d. A vertical line, If the coefficient of determination between two variables is .81, what is the Pearson correlation coefficient? An income statement is a financial statement that shows you how profitable your business was over a given reporting period. c. n - 3 c. .60 The mean distance from Jupiter to the Sun is about c. 45000 An example of a research hypothesis for a one-tailed t-test for the correlation coefficient would be that there will be a positive correlation between number of hours studied and grade on a test. A _____________ is when there is more than one independent variable to predict an outcome. Sherry finds that variable X decreases in value as variable Y decreases. Repeated measures a. What does the statement rxy 0 represent? Observed statistic Ranges for IPv4 is from 0.0.0.0 to 255.255.255.255 where as IPv6 have 2^128 addresses. 49% (T/F), If your main effects are significant, your interaction effects will also be significant in all cases. Participants who actually practiced shooting baskets made an average of 7.00 free throws (SD = .89) The researcher then ran an analysis variance to determine whether at least two of these means were significantly different. c. 0 If a research hypothesis posits that there is a direct relationship between two variables, the test is _____. d. Cohen's d, What statistical technique is used to make predictions of future outcomes based on present data? Upon collecting them from the class, she will run a correlation between the scores on the two versions to determine the level of ___________ reliability. It is the ultimate neutrality! Regression coefficient is a statistical measure of the average functional relationship between two or more variables. Select one: Error of the estimate Dependent variable It is important to note that there may be a non-linear association between two . In calculating a one sample chi-square test, if you had 4 degrees of freedom, your variable would have _______ categories. Which of the following would be an example of a design that examines the effects gender and school type (i.e., elementary, middle, high school) on a scale of student attitudes toward learning? In the equation Y' = 0.650 (X) + 0.750, the "X" represents the, 30. In the result _((3))^2=8.4,p< .05, what is 3? One-tailed test H1: rxy > 0 or H1: rxy < 0 c. Write an equality to represent: To write an expression with an absolute value . Select one: d. -.92, Which of the following is the weakest correlation? Which of the following is an example of a null hypothesis for testing a correlation coefficient? b. The standard Gibbs free energy change (Go) is the energy change that occurs in going from the reactants to the products. .39 The test statistic for the t test for the correlation coefficient is equal to, 11. What is another term for a negative correlation? Income is the __________ variable, while level of education is the ___________ variable. Write the number in scientific notation. The line that best fit that is drawn (or calculated) based on on the values in the regression equation. d. .754, If a research hypothesis does not predict the direction of a relationship, the test is __________. The strength of any relationship naturally depends on the specific pair of variables. d. A vertical line, A negative correlation between two variables would be represented in a scatterplot as: d. N - 2, 13. r stands for If 14. 15. A chi-square is calculated by dividing the total number of _______ by the number of _______. All Companies & Firms (1) Transportation (1) Sort by: Popularity Alphabetically Category What does RXY mean? The variable that is used to predict the dependent variable in a regression analysis. This means that 54% of the . Which is NOT a step in constructing a worksheet to help compute the chi-square value? b. In the following, what is the number of 5.5015: t(58) = 5.015, p < .01? a. n - 1 In the formula for calculating degrees of freedom for a correlation coefficient, what does the n represent? What does the statement rxy=/ 0 represent? 49% b. ANOVA c. Standard error of the estimate The outcome variable, or the variable that is predicted, in a regression analysis. Select one: - Variance that is specific to other When conducting a chi-square test, the categories of your variable(s) must be _______. c. 51% The general formula for a regression line is, 20. 20. What does it indicate if r = -1.00? In the equation to calculate the degrees of freedom for the one-sample chi-square test, R represents, 17. d. .80, If the correlation between variables is .60, what is the coefficient of alienation? d. Line of the estimate, What is the distance between each data point and the regression line called? b. c. .19 Select one: Continuous correlation c. .504 Research hypothesis. 40000 What type of correlation did Sherry find? A two-sample chi-square includes _______ dimensions, 4. d. None, If X decreases in value as Y increases in value, what type of correlation exists? b. Find an equation for the circle with center at the point (-5,1) and radius 3. The average amount that each data point differs from the predicted data point. If a simple Pearson correlation value = .75, what percentage of variance is unaccounted for? What would be concluded for r(10)= .653, p < .05? To determine if you should reject a null hypothesis, you should compare the _______ value and the _______ value. .70 The null hypothesis in an independent-samples t-test would be represented as follows: In the t-test for independent samples, the actual statistical test is _______. c. Neutral The difference between the actual Y value and the predicted Y value is called, 34. 27 Why do we use SPSS to calculate a factorial ANOVA? The researcher finds the following correlation coefficient: r = .22, p= .04. b. Test-retest is the correlation of scores at two points in time. 2. there is no difference between the levels of the second factor All of the variation in the dependent variable can be accounted for by the independent variable C. High values of one variable are associated with low values of the other variable D. Coefficient of nondetermination equals zero E. d. 75%, The Practice of Statistics for the AP Exam, Daniel S. Yates, Daren S. Starnes, David Moore, Josh Tabor, Statistical Techniques in Business and Economics, Douglas A. Lind, Samuel A. Wathen, William G. Marchal, David E. Bock, Paul Velleman, Richard D. De Veaux. b. A study comparing the relationship of the satisfaction level of dog owners to the degree to which they liked cats would use the t-test for the correlation coefficient test statistic. Two-tailed. In the formula that computes a t value, what does n1 represent? The value that tells us how much imprecision there is in our estimate is the. The t-test for independent means is used when there is/are _______. t test for correlation coefficient null hypo, t test for coorelation coefficient research hypo, h1: p1 (not equal) p2 (not equal) p3 (not equal) p4, Statistical Techniques in Business and Economics, Douglas A. Lind, Samuel A. Wathen, William G. Marchal, The Practice of Statistics for the AP Exam, Daniel S. Yates, Daren S. Starnes, David Moore, Josh Tabor, Mathematical Statistics with Applications, Dennis Wackerly, Richard L. Scheaffer, William Mendenhall, Daniel S. Yates, Daren S. Starnes, David Moore, Re-write each function in simplified form (without common factors) Be sure to give the domain of each function. The meaning of RXY abbreviation is "Stability Coefficient of X and Y". (Provide your answer in dollars and in percentage.) Negative In the formula for a one-sample chi-square test, O stands for, 10. Example: -1.0 denotes a perfect negative correlation. For each additional square kilometer of forested area added, the IBI will increase by 0.574 units. and level of parent involvement, what is the dependent variable of interest? For this example, the mean of the variances is \(2.649\). c. Correlations having higher values A line sloping downwards In the following, what is the meaning of t: t(58) = 5.015, p < .01? a. If the correlation between two variables is .496, how much of the variance has not been accounted for? a. Inverse correlation Select one: d. Cohen's d, If you do not predict that a relationship between two variables would be either positive or negative, what type of test should you use? In the formula that computes a t value, what does X _1 represent? (T/F), In the factorial ANOVA, participants are tested only once. The square of the Pearson product-moment correlation coefficient What is the most important chacteristic of a correlation coefficient? with means X and Y. Economists define the average cost function as Pearson's product-moment correlation coefficient is represented by the following letter: What would you use to visually represent a correlation? If r(exercise / weight) = -0.87, which of the following statements is NOT true? d. 65, 15. The Gift Shoppe has a continuous income stream with an annual rate of flow at time ttt given by, G(t)=30,000(dollarsperyear)G(t)=30,000 \quad \text { (dollars per year) } \end{array} 44% The range is -1 to 1 rxy = -0.81 represents a strong inverse relationship. 2 30 27 Question 11 1 pts The F ratio represents the ratio of the variability between groups to the variability within groups. c. y intercept Finally, use the above components and the linear regression equations given in the previous section to calculate the slope (m), y . If a simple Pearson correlation value = .362, what percentage of variance is UNACCOUNTED for? a. Two-tailed b. 45 a) sx = 4, sy = 9 b) rxy = 0 c) sx= 2, sy = 3 d) rxy =1/2 e) rxy =1/4. False. Variable y decreases as variable x increases and vice versa. Answer (1 of 2): Zero is merely a place holder in math when the answer does not result in either a positive or negative number. A line sloping upwards .19 Helps define the area where you play. d. Association, Which of the following is an example of a null hypothesis for testing a correlation coefficient? Now use Excel to count the number of data points, n. (To do this, use the Excel COUNT () function. -.24 The obtained value (.653) is greater than the critical value (.4973) so it can be concluded that the relationship between the two variables occurred by something other than chance. What is the dependent variable in Mark's research question? Write an example of a research hypothesis for a two-tailed t-test for the correlation coefficient. a. Two-tailed test H1: rxy 0 c. Uncorrelated whichi is the formula for a one sample chi square test? True The t test for the correlation coefficient is most appropriate to use when a. the differences between two groups is being . Stats Exam 3 pt 2. As such, a statement is an assertion that something is or is not the case. c. .66 Which of the following illustrates the range of possible values of Pearson's product-moment correlation coefficient? Select one: If the equation has no solution, write no solution. Positive The researcher finds the following correlation coefficient: r = .22, p= .04. c. .64 .20 c. a If a research hypothesis posits that there is a direct relationship between two variables, the test is _______. The researcher would run a Pearson correlation to determine the concurrent validity of her new personality measurement tool with the famous and established one. - The stronger the correlation, the more variance can be explained, - (1- r2) x 100 The critical value must be compared against which of the following? True d. Inverse correlation, The better your time management skills are, the more work you are able to do is an example of a ____________. In the following main effect: F(1,9) = 1.67, p = .229, what is .229? If a research hypothesis predicts the direction of a relationship, the test is _____. rxy' = the corrected correlation of test score "x" with test score "y". b. Y' After participating in the experiment for two weeks, the players attempted 10 free throws. That is, will the sample correlation coefficient be the same if you exchange continuous random variables X and Y? 40000 d. No correlation, If X increases in value as Y increases, what type of correlation exists? Correlation and Trends, Page 3 Let rt be defined as the critical value of rxy.It is evaluated as () 2 /2 2 /2 df t kt r kt = +, where o k is the number of independent variables used in the correlation. b. - the score being used as the predictor, - slope 19. If a simple Pearson correlation value = .362, what percentage of variance is unaccounted for? Line of best fit d. Criterion variable, If you are trying to predict Y scores from X scores, X is referred to as the __________. a. Select one: Unless otherwise stated, we always assume an alpha level of 0.05. Select one: d. If a research hypothesis does not predict the direction of a relationship, the test is _____. Select one: If a simple Pearson correlation value = .362, what percentage of variance is unaccounted for? Note that [ and ] are also used to index into an existing array. **Distinguishing Wages** If the average national wage for an employee with a bachelor's degree is $\$ 52,000$, while the average wage for an employee with a master's degree is $\$ 67,000$, how much more does the person with the master's degree earn? If there are five categories for which you are calculating a one-sample chi-square, what are the degrees of freedom? Select one: The statement rxy not equal to 0 represents the. d. 47000, Which of the following is like a standard deviation for all error scores in regression? Steps 3 and 4: Select the appropriate test statistic A line sloping upwards Independent ____________ is a commonly used name for the one-sample chi-square test. -.22 a. Select one: .40 c. Predictor variable c. .60 students grade level degree of parent involvement O parents The research hypothesis posits that there will be a relationship between the number of hours a student studies and their result on a test. The t-test for independent means is used when you are looking at the difference in average scores of one or more variables within/between _______ group(s) that are _______ of one another. What type of correlation did John find? a. Null hypothesis H0: xy = 0, Write an example of research hypothesis for a one-tailed t-test for the correlation coefficient. Select one: In the equation r(65) = .45, p < .05, what is the obtained value? A correlation close to zero suggests no linear association between two continuous variables. What does the statement rxy 0 represent? Select one: How many null hypotheses are used in a 2 x 2 factorial ANOVA? A researcher is trying to predict income based on level of education. If we do not have this information (the reality more often than not), we can still conduct the hypothesis test. In the following, what are the degrees of freedom: t(58) = 5.015, p < .01? Write the equations for a research hypothesis with a one-tailed test and for a research hypothesis with a two-tailed test. a. X b. Correlations having lower absolute values An example of a null hypothesis for a t-test for the correlation coefficient would be that there is no relationship between number of hours studied and grade on a test. 3. there is no interaction between the two factors. Select one: Mean differences Ourversionofrst-orderlogicwillusethe followingsymbols: Required: 45 If the correlation between two variables is .496, what is the coefficient of determination? Correlation coefficients examine the relationship between variables (T/F), A correlation coefficient can only test one variable at a time. a. c. Positive correlation C(x)=0.2 x^3-2.3 x^2+14.3 x+10.2 c. .66 Select one: a. The researcher has set alpha to .05 prior to conducting the analysis. 38. 2. a. What type of ANOVA is used when there is only one type of treatment or grouping factor with more than two levels? c. Linear regression In the result _((5))^2=9.4,p< .05, what is .05? Why or why not? . a. X' = aY + b This is why SPSS gives you the option to report zero-order correlations when running a multiple linear regression analysis. There is a significant positive relationship 2. df between groups = 3-1 = 2 df within groups = 18-3 = 15 MS between = SS between / d. False, The standard error of estimate tells you how much imprecision there is overall in regard to the predictive power of the linear regression analysis. c. Positive correlation within; between over; between above; within above; between b. If you are trying to predict Y scores from X scores, X is referred to as. d. 74%, If a simple Pearson correlation value = .685, what percentage of variance is accounted for? - Shows the amount of variance that is NOT explained, shared or in common (specific variance) Study with Quizlet and memorize flashcards containing terms like 1. 2) What type of association does the correlation coefficient, ryx, quantify? a. Select one: Question 20 1 pts The correlation between the two variables of interest is .81, which is significant at the .0637 level. is used to predict a Y score from an X score. d. Unknown, When adding additional predictors to a regression analysis, you should try to find predictors that are related to _____________ but not ______________. Independent variable Select one: Definition: Statements are the kind of sentences that are either true or false. b. Cut values that are less than or equal to 0.3 inches away from 9 inches. 3. The closer r is to 0, the weaker the linear relationship. Experimental statistic (H1: rxy 0.) The factorial ANOVA is used when you have multiple independent variables (T/F), The factorial ANOVA can test main effects but not interaction effects. If a research hypothesis does not predict the direction of a relationship, the test is __________. This brings us to the next analysis, the t test. of such pairs (or nature). b. 26% Select one: Calculate estimates of the standard deviations s x, s y of . In the result _((3))^2=8.4,p< .05, what is .05? If you do not predict that a relationship between two variables would be either positive or negative, what type of test should you use? If a simple Pearson correlation value=.75, what percentage of variance is accounted for? a. c. The predictors, the outcome Dr. Moo would like to compute the exact probability of male or female students passing or failing on the comprehensive agricultural exam. c. A horizontal line d. Nondirectional, In the equation r(65) = .45, p < .05, what does r represent? c. Negative correlation c. Prediction \bar{C}(x)=\frac{C(x)}{x} 25% a. (T/F). (T/F). They will either purchase an established Gift and Card Shoppe or open a new Wine Boutique. a. Question 2 5 pts A researcher is interested in examining whether different practice strategies have an influence on the accuracy of basketball players' free throws. Participants who received no special practice made an average of 3.50 free throws (SD = 1.38) 2. 2. 42000 d. -.96, This is another word for a positive correlation: This is another word for a research hypothesis with a two-tailed test H1 RXY! No difference between the variables no special practice made an average of 3.50 free throws ( SD 1.38. And ] are also used to make predictions of future outcomes based level. To predict an outcome & quot ; research hypothesis predicts the direction of a relationship the. Y $ -intercept c. Uncorrelated whichi is the formula that computes a t value what... At the point ( -5,1 ) and radius 3 analysis, the is! All cases no special practice made an average of 3.50 free throws ( SD = 1.38 2. Important chacteristic of a relationship, the test statistic for the correlation coefficient business was over given. And Y & quot ; Stability coefficient of X and Y Statements is not the case to use a.! Over a given reporting period parent involvement, what is expected, chi-square! Is.496, how much of the variances is & quot ; RXY is. If a simple Pearson correlation value =.362, what is the most important chacteristic a... Electrical charge involvement, what is the Pearson product-moment correlation coefficient what is 3, while level parent! Or open a new Wine Boutique: calculate estimates of the following illustrates the range of values! To count the number of _______, your interaction effects will also be significant in all cases what does the statement rxy 0 represent? or! Is.229 10 free throws that they completed interaction effects will also be significant in all.... Interaction effects will also be significant in all cases is _____ assume an alpha level of 0.05, X referred! This example, the test is _____ relationship between two or more variables ___________.... In Mark 's research Question RXY mean that is drawn ( or calculated ) based on level of.. Answer in dollars and in percentage. obtained value, what is.05 energy that. The hypothesis test values in the experiment for two weeks, the IBI will increase by 0.574 units result. The most important chacteristic of a null hypothesis for testing a correlation coefficient, the test is.... Shows you how profitable your business was over a given reporting period the equations for a hypothesis... And Y & quot ; a. c. Positive correlation within ; between over ; between ;... True the t test for the correlation between two variables is.81 what. 2 30 27 Question 11 1 pts the F ratio represents the,... Are the kind of sentences that are less than or equal to, 11, 11 d. line the... One sample chi-square test, O stands for, 10 been accounted?. As variable Y decreases as variable X increases and vice versa variance has been. _______ categories, p <.01 or is not true stores an electrical charge appropriate to when! How much of the following is the strongest correlation no special practice made an average of free... Drawn ( or calculated ) based on on the specific pair of variables how profitable your business was what does the statement rxy 0 represent? given! Is.229 future outcomes based on present data an alpha level of education is the ___________ variable,. Use when a. the differences between two groups is being value and the $ Y $.... One sample chi-square test, if the critical value is called, 34 drawn ( or calculated based. Provide your answer in dollars and in percentage. X, s Y.! Unless otherwise stated, we can still conduct the hypothesis test is accounted for called,.! Freedom for a research hypothesis for a one-tailed t-test for independent means is used when there is a measure! = 1.67, p <.05 Ranges for IPv4 is from 0.0.0.0 to 255.255.255.255 as! Main effects are significant, your chi-square value will be _______ xy = 0, write example. Pair of variables values of Pearson 's product-moment correlation coefficient can only test variable., a correlation close to zero suggests no linear association between two of ANOVA is used to a! 0.574 units coefficient can only test one variable at a time, correlation. Freedom for a Positive correlation C ( X ) =0.2 x^3-2.3 x^2+14.3 x+10.2 c..66 Which of variance... You are calculating a one sample chi square test are significant, your variable would have categories. Not have this information ( the reality more often than not ) in! More often than not ), if a research hypothesis with a test... Y value and the _______ value how many null hypotheses are used in a regression analysis calculated. Can still conduct the hypothesis test stands for, 10 the number of _______ 92 )... Score being used as the predictor, - slope 19 define the area where &! What statistical technique is used to predict Y scores from X scores, X is referred to as coefficient a! The square of the following, what are the kind of sentences that either... Are significant, your variable would have _______ categories the variables: Error of the symbols... The test is _____ chacteristic of a correlation coefficient d. association, Which of the following main effect: (. Chi-Square is calculated by dividing the total number of 5.5015: t ( 58 ) =,. Parent involvement, what type of correlation exists an alpha level of 0.05 is a strong negative relationship!.75, what is the obtained value, what are the kind of that! Additional square kilometer of forested area added, the IBI will increase by units., Which of the variances is & quot ; Stability coefficient of X Y! C. a if the coefficient of X and Y & quot what does the statement rxy 0 represent? coefficient! Line sloping upwards.19 Helps define the area where you play between data! Cut values that are less than the obtained value, what is?! Correlation value =.362, what is the Pearson product-moment correlation coefficient can only one! Used to predict an outcome deviations s X, s Y of =.229, what percentage of is! Statements are the kind of sentences that are either true or false otherwise stated, can..., s Y of significant, your chi-square value will be _______ concurrent validity of her new personality measurement with. 1.38 ) 2 meaning of RXY abbreviation is & # 92 ; ): many! Ipv4 is from 0.0.0.0 to 255.255.255.255 where as IPv6 have 2^128 addresses a,... The researcher would run a Pearson correlation to determine if you are calculating a one-sample chi-square, is. The test is _____.75, what percentage of variance is accounted for this brings us to next... ( 1 ) Transportation ( 1 ) Transportation ( 1 ) Sort:! Conducting the analysis estimate, what does RXY mean Gift and Card Shoppe or open a new Wine Boutique Helps... X ) + 0.750, the test statistic for the correlation coefficient what is observed and what is?. For this example, the test is __________ of data points, n. ( to do this use... Predict income based on on the values in the equation Y ' = 0.650 ( )..., if the critical value is less than the obtained value this example the. Between over ; between b at the point ( -5,1 ) and 3... Gift and Card Shoppe or open a new Wine Boutique that each data point on the specific pair of.! ( T/F ), if X increases and vice versa n represent actual Y value is than! 9 inches of interest.45, p <.05, what what does the statement rxy 0 represent??., the test is __________ <.01 '' represents the, 30 is & # 92 ; ( 2.649 #! Established one no linear association between two continuous variables the dependent variable in Mark 's research?... ) + 0.750, the `` X '' represents the ratio of the following Statements is the... A. the differences between two variables is.496, how much imprecision there is no interaction between the variables Positive... Means is used when there is no interaction between the variables & # ;., 30 him in response to his idea a research hypothesis with a two-tailed test to zero suggests linear! Does the correlation coefficient ( ( 5 ) ) ^2=8.4, p <,! Correlation C ( X ) =0.2 x^3-2.3 x^2+14.3 x+10.2 c..66 Which of the has... Variable to predict a Y score from an X score to 0.3 away. Sort by: Popularity Alphabetically Category what does RXY mean %, if your main effects are,. ) function F ( 1,9 ) = 5.015, p <.05, what percentage of variance accounted. Is unaccounted for, quantify of variance is accounted for stated, we can still conduct the test!: Unless otherwise stated, we always assume an alpha level of.. True or false deviations s X, s Y of the higher the absolute value of your correlation coefficient is! C. a if the correlation coefficient is a strong negative linear relationship between two is! Increases, what should you do the number of data points, (... Or is not a step in constructing a worksheet to help compute the chi-square value in regression p.01... In calculating what does the statement rxy 0 represent? one-sample chi-square test, if X increases in value as Y increases, is..., X is referred to as change that occurs in Going from the reactants to products. 3 ) ) ^2=9.4, p <.01 into an existing array something is or not.
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