Question

In: Statistics and Probability

y^ = 0.9 - 0.3x x: 2 5 1 4 y: 1 2 1    -4...

y^ = 0.9 - 0.3x

x: 2 5 1 4

y: 1 2 1    -4

a. Compute the three sums of​ squares, SST,​ SSR, and​ SSE, using the defining formulas.

SST

SSR

SSE

b. Verify the regression​ identity, SST​ = SSR​ + SSE. Is this statement​ correct?

c. Determine the value of r squared

​(Round to four decimal places.)

d. Determine the percentage of variation in the observed values of the response variable that is explained by the regression.

​(Round to two decimal places.)

e. State how useful the regression equation appears to be for making predictions.

Solutions

Expert Solution


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