If a Researcher Is Interested in Measuring the Effect of Two

question 22

Multiple Choice

If a researcher is interested in measuring the effect of two independent variables on a dependent variable, he/she should use:

• A) the Pearson correlation coefficient.
• B) the Spearman correlation coefficient.
• C) bivariate regression analysis.
• D) multiple regression analysis.
• E) simple regression.

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Definitions:

Acid-base Extractions

A technique in organic chemistry used to separate compounds based on their differences in solubility in acidic or basic environments.

Benzoic Acid

An aromatic carboxylic acid with the formula C6H5COOH, used in the manufacture of various cosmetics and pharmaceuticals.

Trichloroacetic Acid

A powerful acetic acid derivative (CCl3COOH), used as a reagent in organic synthesis and as a cauterizing agent in medicine.

Dichloroacetic Acid

A halogenated acetic acid derivative used as a chemical reagent and in the treatment of certain medical conditions, characterized by two chlorine atoms attached to the carbon atom adjacent to the carboxyl group.