# Regression analysis

What does the symbol

n

∑ Xi

i =1

mean? Please provide an example.

The following sample observations were randomly selected.

X: 4, 5, 3, 6, 10

Y: 4, 6, 5, 7, 7

Determine the coefficient of correlation and the coefficient of determination. Interpret the results.

The following sample observations were randomly selected.

X: 5, 3, 6, 3, 4, 4, 6, 8

Y: 13, 15, 7, 12, 13, 11, 9, 5

Determine the regression equation.

Determine the value of Y' when X is 7.

The following regression equation was computed from a sample of 20 observations:

Y' = 15 - 5X

SSE was found to be 100 and SST total 400.

Determine the standard error of estimate.

Determine the coefficient of determination.

Determine the coefficient of correlation. (Caution: Watch the sign!)

https://brainmass.com/statistics/regression-analysis/regression-analysis-234633

#### Solution Summary

The solution provides step by step method for the calculation of simple regression model . Formula for the calculation and Interpretations of the results are also included.