The following data represent the number of flash drives sold per day at a local computer shop and their prices.

Question

Price (x) Units Sold (y)
$34 3
36
4
32
6
35
5
30
9
38
2
40
1
a.
Develop a least-squares regression line and explain what the slope of the line indicates.
b.
Compute the coefficient of determination and comment on the strength of relationship between x and y.
c.
Compute the sample correlation coefficient between the price and the number of flash drives sold. Use = 0.01 to test the relationship between x and y.

Answer 1

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