Statistics and Probability

Match each scatterplot shown below with one of the four specified correlations. a. -0.91 b. -0.30 c. 0.70 d. 0.50 O O O O O o 9 oo O - v O O OO O O Q OO - v O O O Q O - v ooo O o A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do (y). NO The results of the regression were: y=ax+b a=-0.773 b=34.792 2=0.452929 r=-0.673 Using your favorite statistics software package, you generate a scatter plot with a regression equation and correlation coefficient. The regression equation is reported as y = - 95.07x + 16.19 and the r = - 0.362. What proportion of the variation in y can be explained by the variation in the values of x? 12 = Based on the data shown below, calculate the regression line (each value to two decimal places) S y = X y 5 6.6 6 11.72 7 11.34 8 12.86 9 14.88 10 11 16.52