Question

Below is a portion of the data for the final exam scores (FINAL) in a college sophomore statistics class. Also included are the student scores on the math portion of the high school SAT exam (MSAT). The actual data set had an n = 8.

FINAL 72 79 65 89 95 78 Sum Xs= 4155

MSAT 475 550 450 600 610 500 Sum Ys = 626

Sum X²s = 2183225 Sum Y²s = 49634 Sum X times Y = 329040

a. Calculate the three SS terms, subscripts xx, yy, and xy. (9 pts)

b. Generate the estimated "least squares" line. (6 pts)

c. Interpret the estimated slope coefficient. (4 pts)

d. Calculate SSRegression. (4 pts)

e. Calculate and interpret the coefficient of determination. (8 pts)

f. What is the residual for the third observation in the data set? (5 pts)

Answer 1

please upvote