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The following sample observations were randomly selected.

Please help answer the following statistics problems.

DQ1: 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.

DQ2:
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

a. Determine the regression equation.
b. Determine the value of Y' when X is 7.

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Please see the attached Excel file.

I have plotted Y against X in the accompanied Excel file. The correlation coefficient is R and the coefficient of determination is R2.
From Excel it was found that:
R2 = 0.57 hence R = 0.75
The correlation coefficient measures the strength and the direction of a linear relationship between two ...

Solution Summary

This posting helps with problems involving data collection and sampling observations. The solution provides detailed explanations and calculations, including graphs in Excel, for this problem.

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