Kizspy | Question: 87
(Choose 1 answer)
(See picture)
Α. -0.5
B. 0.5
C. 0.92
D. -0.92
E. None of the other choices is correct
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.
Find the sample correlation coefficient.
Price $120 $110 $100
Sales 7 4 10
