The following sample observations were randomly selected.
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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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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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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 ...
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