# The relationship between two variables

Calculate, test, and interpret the relationship between two variables using the correlation coefficient.

The following sample observations were randomly selected.

X: 5 4 4 5 11

Y: 5 7 4 6 8

Picture Click here for the Excel Data File

a. Determine the regression equation. (Round your answers to 3 decimal places.)

formula20.mml = + X

b. Determine the value of formula432.mml when X is 8. (Round your answer to 3 decimal places.)

formula432.mml

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#### Solution Preview

Hi there,

Thanks for letting me work on your post. Here is my explanation:

a. mean of x=(5+4+4+5+11)/5=5.8

mean ...

#### Solution Summary

This solution discusses the relationship between two variables.

$2.19