Solution) A real estate agency collects data concerning y= the sales price of a house (in thousands of dollars
Question: A real estate agency collects data concerning y= the sales price of a house (in thousands of dollars), and x = the home size (in hundreds of square feet)
Home size (x) | 23 | 11 | 20 | 17 | 15 | 21 | 24 | 13 | 19 | 25 |
Sales price (y) | 180 | 98.1 | 173.1 | 136.5 | 141 | 165.9 | 193.5 | 127.8 | 163.5 | 172.5 |
a) Find the value of the linear correlation coefficient r.
b) Find the value of the coefficient of determination r2, and interpret the meaning for this problem.
c) Is there a linear correlation between home size and sales price? Test it at the 0.05 significance level.
d) If there is a linear correlation, what is the regression equation?
e) Interpret the meaning of the slope b1 in this problem.
f) Interpret the meaning of the y-intercept b0 in this problem. Will this make sense to the data set?
g) Using (d), find the predicted sales price that has home size of 1200 ft2.
h) Find the standard error of estimate SYX.
i) Find the total variation SST.
j) Using (b) and (i), find the explained variation SSR.
Deliverables: Word Document
