Please help solve these questions.

Ringtone N The following 12 questions (Q1 to Q12) are based on the summarized table below: Hours Studied X2 Score on Quiz N2 XY 1 1 5 25 5 2 4 3 9 6 3 9 5 25 15 5 25 9 81 45 EX =11 Y =22 XY =71 ZX2=39 Y2 =140 Q1: What is the predictor variable? Q2: What is the criterion variable? Part A** Compute the Pearson correlation. Steps: Q3: What is the covariance? Q4: What is the standard deviation of the predictor variable? Q5: What is the standard deviation of the criterion variable? Q6: What is the Pearson's r value? Q7: What is the best interpretation of your Pearson correlation in Q67 A. As 'hours studied' goes up there is a corresponding increase in 'score on quiz B. As 'hours studied' goes up there is a corresponding decrease in 'score on quiz' s Q8: The strength of the above relationship is considered A. weak B. moderate C. strong Part B**Compute the regression equation. Steps: Q9: What is the numeric value for the slope? Q10: What is the y-intercept? Q11: What is the regression equation? Q12: Predict the total number of points on the quiz for a person studying 4 hours. Q13: A variable that is being predicted by another variable is called a(n) predictor variable criterion variable independent variable two of the above are correct = I S Share cow |1 O P R A "] A variable that is being predicted by another variable is called a(n) predictor variable criterion variable onwe independent variable two of the above are correct Which of the following correlations is stronger? > +2.56 B. +0.53 C. +0.71 D. -0.87 Computing correlations is appropriate when we have A. categorical data B. ratio data C. measurement data D. two of the above are correct N, =R =l S Q16: Two variables, X and Y, have a significant linear correlation. Under what conditions can the direction of causality be determined just from knowing the correlation coefficient? when the correlation is negative when the correlation is positive neither a) nor b) are correct QI7: The following 3 questions caowe both A and B are correct If you conducted a study where you could account for 64% of the variability for one variable with another variable, which of the following correlation coefficients did you find? A, 80 B. .64 C. .4096 D. none of the above are correct 552 d N = PSY1110_MODUL..T_SUMMER_1.pdf - Read-only - 2 @ O 3 L 4 T KN . The following 3 questions (Q18 to Q20) are based upon the scatterplots below: Q18: If you were to construct a regression equation using the X variable to predict the Y variable for each of the three sets of data, for which set of data would the regression equation have the most negative slope? Q19: If you were to compute a correlation between the X and Y variables for each of the three sets of data, which set of data would yield a correlation closest to zero? Q20: If you were to construct a regression equation using the X variable to predict the Y variable for each of the three sets of data, for which set of data would the regression equation have the largest. positive slope? Share |1 O <