The Pearson Correlation Between X₁ and Y Is R =

question 7

Multiple Choice

The Pearson correlation between X₁ and Y is r = 0.70.When a second variable,X₂,is added to the regression equation,we obtain R² = 0.64.How much variance for the Y scores is predicted by using only X₁ as a predictor variable?​

• A)​0.06 or 6%
• B)​0.15 or 15%
• C)​0.49 or 49%
• D)​0.70 or 70%

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Definitions:

Substrate

A reactant in a chemical reaction upon which enzymes act.

Diene

Organic compounds containing two double bonds, which may participate in various polymerization and other chemical reactions.

Dienophile

A compound with an electron-deficient double or triple bond that readily reacts with a diene in a Diels-Alder reaction.

Major Organic Product

The most abundant product formed in a chemical reaction involving organic compounds, often favored kinetically or thermodynamically.