Answer (Choose 1 answer)
(See picture)
FPT Retail sells IT products in their shops and wanted to examine the relationship between price and demand. The price of a smart phone was adjusted each week and the weekly sales were recorded in the table.
A. None of the other choices is correct
B. -0.5
Find the sample correlation coefficient.
C. 0.92
D. 0.5
Ε. -0.92
Price $120 $110 $100
Sales
7 4 10
ORi
Q: 47
