Question

In: Math

Use the following data to: draw a scatter plot, find the coefficient correlation, find the regression...

Use the following data to: draw a scatter plot, find the coefficient correlation, find the regression line, predict y' for x =90.

First Test - X Final test Y

73 70

86 80

93 96

92 85

72 68

65 68

58 62

75 78

Solutions

Expert Solution

Scatter plot :

Correlation ( r ) :

regression line :

Given x = 90

then

y = 12.849 + 0.821⋅( 90 )

= 86.739


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