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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!)

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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.

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