Posted by **Ruth** on Sunday, April 29, 2012 at 11:32pm.

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

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 alpha= 0.01 to test the relationship between x and y.

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