Question

In a study on a certain crop, it was found that 47% of the variability in...

In a study on a certain crop, it was found that 47% of the variability in yield was explained by rainfall. What is this information referring to?

A. The slope of the regression line.

B. The p-value for a test of the slope.

C. The correlation.

D. The value of R-squared for the model.

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Answer #1

In a study on a certain crop, it was found that 47% of the variability in yield was explained by rainfall. What is this information referring to?

Answer :

D. The value of R-squared for the model.

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R-squared mesures percenatge of variability of the dependant variable explained by a independet variable (in regression model)

For the given problem,

Yield : dependent variable

rainfall : independent variable

47% of the variability in yield i.e (variability of the dependent)   was explained by rainfall.(independent variable)

Hence this information referring to The value of R-squared for the model.

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