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Question ID 16220

Refer to the exhibit.

You ran a linear regression, and the final output is seen in the exhibit.
Based only on the information in the exhibit and an acceptable confidence level of 95%,
how would you interpret the interaction of variable D with the dependent variable?

Option A

In this model, Variable D is not significantly interacting with the dependent variable

Option B

For every 1 unit increase in variable D, holding all other variables constant, we can expect the dependent variable to increase by 10.23 units

Option C

For every 1 unit increase in variable D, holding all other variables constant, we can expect the dependent variable to be multiplied by 10.23 units

Option D

Variable D is more significant than variables A, B, and C.

Correct Answer A
Explanation


Question ID 16221

You are using MADlib for Linear Regression analysis. Which value does the statement
return?
SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;

Option A

Goodness of fit

Option B

Coefficients

Option C

Standard error

Option D

P-value

Correct Answer A
Explanation

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