1)

If the linear correlation between two variables is negative, what can be said about the slope of the regression line? Choose the correct answer below 0 A. More information is needed 0 B. Positive 0 O. Negative A data set is given below. (a) Draw a scatter diagram Comment on the type of relation that appears to exist between x and y. (b) Given that x= 3.5000, sX = 2.3452, y = 4.4633, sy = 1.5459, and r= - 0.9351, determine the least-squares regression line. (c) Graph the least-squares regression line on the scatter diagram drawn in part (a). 0 2 3 4 6 6 Q1 z 6.0 5.9 5.6 3.9 2.6 2.9 (a) Choose the correct graph below. O A. o B. o c. AV . V y " Av 6 ' o g 61 u ' g 6 - Q . Q . ' I '_l'_r}' m x x 0 > 0-. > o o s o 6 0 There appears to be i relationship. (b) y = x + ( (Round to three decimal places as needed.) mix 3? ,0 ,9. OD. :9 c9 IZ' . \fMatch the coefficient of determination to the scatter diagram. The scales on the x-axis and y-axis are the same for each scatter diagram. (a) R = 0.98, (b) R2 = 1, (c) R2 = 0.62 Response Explanatory (a) Scatter diagram Response b) Scatter diagram Explanatory (c) Scatter diagram Response Explanatory