Tom Is Studying How Changes in Income Affect the Frequency

question 47

Multiple Choice

Tom is studying how changes in income affect the frequency of eating out. In this example, "changes in income" is the ________________ variable and "frequency of eating out" is the _________________ variable.

• A) spurious, control
• B) control, spurious
• C) independent, dependent
• D) dependent, independent

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Definitions:

Standard Normal

A special case of the normal distribution with a mean of zero and a standard deviation of one, commonly used in z-score calculations.

Area

An evaluation of the area covered by a shape or surface in two dimensions, calculated in units².

Area

In statistics, often refers to the region under the curve of a probability distribution representing the probability of a range of outcomes.

Variance

An indication of how data points diverge from their average, showing the extent of their spread.