16) Answer is 1 because there is very strong relationship between the two contestants and we know that the strength of linear relationship is measured by correlation and the peak value of correlation occurred when there is strong relationship so ,here the correlation coefficient is 1.
17)The intercept is 0 because the regression line of y on x is given by
Y- Y bar= ( sigma y / sigma X ) ( x - xbar)
But here x and y are standardised so there mean is 0 . So, y bar will be 0 which acts as a intercept.
explain answers Question 5 0/1 pts In a skills competition involving many different events, two particular...
The multiplication of two variables is used as a predictor if the two variables jointly affect the response. True O False Question 7 1 pts Even if the P-value of the F test in a multiple regression model is nearly zero, it is possible that the R of the model is much less than one. OT False Question 8 1 pts in selecting independent variables for a regression model, neither the forward selection method nor the backward elimination method guarantee...
Questions 2, 5, 8 and 9 Paused Apps M Gmail YouTube Maps Question 2 0.5 pts For a simple linear regression, the standardized regression coefficient (Beta) is: O equal to the Pearson correlation coefficient. unrelated to the correlation value. O the square root of the slope. O the square of the r statistic. 1 pts Question 3 Question 5 0.5 pts If the standard error of the estimate is zero, the relation between two variables is: perfect imperfect curvilinear. unknown...
please answer all question (2-5) thanks Question 2 1 pts As the number of hours a student studies increases, the number of errors made on the exam decreases. There is a strong relationship between these variables. Select the value for the pearson correlation (r) that would be appropriate 0-0.7 0-0.4 o 0.6 o 1.0 Question 3 1 pts The following APA summary was reported for a one-sample t-test (two-tailed, alpha = .05). t(15) = 3.3, p = .003 Which of...
Questions 6, 7, 10, 11 and 12. Question 6 1 pts Select the appropriate equation for the line of prediction from the SPSS output. Coefficients Standardized Coefficients Beta Sig. Unstandardized Coefficients Model B Std. Error 1 (Constant) 3.977 1.193 Variable 1 414 096 Variable 2 -2019 2011 a. Dependent Variable: Outcome (Y) 458 -181 t 3.333 4.313 -1.704 .001 000 ,093 O Yhat = 3.977 +4.313X1 - 1703X2 Yhat - 3.977 +0.458X, -0.181X2 Yhat = 3.333+4.313X1 - 1703X, Yhat =...
10. A random sample of boarding school students was asked how many 8-ounce servings of soda they had consumed on a certain Sunday and how many hours of sleep they got that night. Their responses are displayed in the scatter plot below. Soda Sleep 0 6 0 8 1 6 1 7 2 7 3 5 3 8 4 6 5 5 6 3 6 6 7 4 7 6 8 3 10 2 a) Which variable has been used...
0/1 pts Incorrect Question1 Binary variables are generally used to control for outliers in your sample can take on only two values exclude certain individuals from your sample. O can take on more than two values 0/1 pts Question 5 Suppose that a researcher, using data on class size (CS)and average test scores from 103 third-grade classes, estimates the OLS regression Testscore-556.828 - 6.2274CS, R2-.09, SER 12.3. (a) A classroom has 20 students. The regression's prediction for that classroom's average...
Question 1 1 pts The equation of the regression line between two variables x (independent variable) and y (dependent variable) is given by ý = -3x -- 2; and the correlation coefficient iss =-.95. The possible x- values range from 1 to 10. Based on the given r, which of the following conclusions may be made? X and Y are very weakly correlated. and y are moderately correlated, and y tends to increase as x is increased. X and y...
Erika Diaz Your name Assignment 10 Correlation, Scatterplot, and Prediction (due 7/30/20 - 1/4/20)(28 pts) 1. A teacher hypothesizes that the more days of school student misses, the worse the student will do on a final exam (possible scores on the exam range from 0 to 20). She obtained a random sample of 12 students. The data are shown below. Student days missed Final exam score 1 3 16 2 2 17 3 5 13 4 8 7 5 4...
orrect Question 7 0/1 pts The amounts of 6 restaurant bill x (in dollars) and the corresponding amounts of the tips y (in dollars) are given below Bill 32.98 49.72 70.29 97.34 43.58 52.44 Tip 4.50 5.28 10.00 16.00 5.50 7.00 The regression equation is ý = 0.19.2 - 2.73, and the coefficient of determination r2 = 0.97. Based on the given r, which of the following conclusions may be made? Hint: Correlation is r, we are given p2. Thus...
8) (3 pts) Schlitz has been told that every thousand dollars added to the median household income should increase the page cost by less than $750. She wishes to test whether the regression provides convincing evidence to reject this claim. Therefore, she should test a) H0: βINCOME = -0.750 versus Ha: βINCOME < -0.750 b) H0: βINCOME = 0.750 versus Ha: βINCOME < 0.750 c) H0: βINCOME = -0.750 versus Ha: βINCOME ≠ -0.750 d) H0: βINCOME = 0.750 versus...