Question
Asked Sep 30, 2019

Compute the peast -squares regression line for predecting y from x given the following summary statistics:

X= 8.1           s=1.2          y=100

sy= 15            r= 0.70

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Step 1

The provided data is,

8.1
y100
S 1.2
S 15
r 0.7
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8.1 y100 S 1.2 S 15 r 0.7

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Step 2

The slope, b can be computed as:

b=r
15
-0.7
1.2
8.75
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b=r 15 -0.7 1.2 8.75

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Step 3

The intercept, a can b...

a -bx
100 (8.75)8.1
.75) 8.1
29.13
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a -bx 100 (8.75)8.1 .75) 8.1 29.13

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Advanced Topics in Statistics

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