Given are five observations for two variables, X and Y.
a.
Choose the correct scatter diagram for these data: A
b.
What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? There appears to be a NEGATIVE linear relationship between X and Y.
c.
Try to approximate the relationship between X and Y by drawing a straight line through the data. MANY DIFFERENT STRAIGHT LINES CAN BE DRAWN to provide a linear approximation of the relationship between X and Y.
(NEED ANSWERS FOR D and E)
d.
Develop the estimated regression equation by computing the values of b0 and b1 using equations: (Enter negative values as negative figure)
e.
Use the estimated regression equation to predict the value of Y when x=20
Extracted text: C. D. 60 60 50 50 40 40 30 30- 20- 20 10 10- 10 20 30 40 50 60 x 10 20 30 40 50 60 x b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? There appears to be a negative linear relationship between z and y. C. Try to approximate the relationship between z and y by drawing a straight line through the data. Many different straight lines can be drawn VO to provide a linear approximation of the relationship between z and y. d. Develop the estimated regression equation by computing the values of by and b, using equations: (Enter negative values as negative figure) b, = by = - bịE * (to 2 decimals) e. Use the estimated regression equation to predict the value of y when = 20. (to 2 decimals)
Extracted text: Given are five observations for two variables, a and y. 2 12 9 24 18 Yi 52 48 50 16 19 a. Choose the correct scatter diagram for these data: A. В. y 60 60 50- 50- 40- 40- 30- 30- 20 20 10- 10- 10 20 30 40 50 60 x 10 20 30 40 50 60 x