When We Use Inferential Statistics to Address a Research Question,we

question 8

Multiple Choice

When we use inferential statistics to address a research question,we _____.

• A)have collected information from the entire population
• B)perform all calculations in the same way as with descriptive statistics
• C)make generalizations from a sample to the population it was sampled from
• D)all of these

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Definitions:

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it depends on the chosen significance level.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, usually set before the experiment.

Seat Belts

Devices aimed at protecting vehicle passengers from injurious motions that might occur in the event of an accident or abrupt halt.

Chi-Squared Test

A statistical test used to determine if there's a significant difference between the observed frequencies and the expected frequencies in one or more categories.