Juan and Joseph Are Opera Singers

question 101

Multiple Choice

Juan and Joseph are opera singers.Juan is a baritone.Joseph is a tenor: his voice is higher-pitched.With respect to their physical properties,the sound waves corresponding to Juan's voice are lower in _____ than those corresponding to Joseph's voice; that is,they are lower in _____.

• A) frequency; decibels
• B) frequency; hertz
• C) amplitude; decibels
• D) amplitude; hertz

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Definitions:

Variation

In statistics, it refers to the measure of the spread or dispersion of a set of data points or values in a dataset.

Explanatory Variables

Variables in a statistical model that are used to explain variance in the dependent variable; also known as independent variables.

Sales

The exchange of a commodity for money; the action of selling something.

Least Significant

Refers to the component of a data set, measurement, or statistical result that contributes the least impact or importance.