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So I am given a line of Yhat = .93x + 20.84. r = .62 and...

So I am given a line of Yhat = .93x + 20.84. r = .62 and standard deviation of Y = 6.

Solve for standard deviation of X.

Math   Statistics-And-Probability   
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Answer #1

Given Regression Line:

Correlation coefficient r = 0.62

Standard Deviation of Y = = 6

To find Standard Deviation of X =

Slope of Regression Line is given by:

Here:

a = 0.93

r = 0.62

= 6

= To be found

Substituting, we get:

So,

So,

Answer is:

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