Michael Hands Out a Survey to Find Out the Average

question 2

Multiple Choice

Michael hands out a survey to find out the average age and schooling level of his class. What type of research is this?

• A) historical
• B) cause-and-effect
• C) quasi-experimental
• D) descriptive

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Definitions:

Variability

The degree to which data points in a statistical distribution or data set diverge from the mean value.

Sample Means

The average value obtained from a sample, which is a subset of a larger population.

Population Mean

The average value of a given set of numbers in a population.

Null Hypothesis

In hypothesis testing, it's the hypothesis that assumes no effect or no difference and serves as the basis for testing statistical significance.