In Which Situation Would It Be Necessary to Use a Within-Groups

question 86

Multiple Choice

In which situation would it be necessary to use a within-groups ANOVA?

• A) A researcher is interested in a longitudinal study that follows a group of kindergarten children through high school and assesses their body mass index at four time points.
• B) A researcher classifies a group of college students on the basis of their political leanings as liberal, conservative, libertarian, or green.
• C) A researcher is interested in the effects of distraction on driving performance and randomly assigns participants to one of three distraction groups.
• D) A researcher is interested in whether a sensitivity training class changes attitudes toward minority populations.The researcher assesses these attitudes before and after the sensitivity training class.

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Definitions:

Variance

A statistical measure of the dispersion showing how much the values in a data set diverge from the mean or expected value.

Wholesaler

A person or company that buys goods in large quantities from producers and sells them in smaller quantities to retailers or other wholesalers.

Retailer

A business or individual that sells goods or services directly to consumers, typically operating out of physical or online stores.

Bullwhip Effect

A situation in supply chain management where slight shifts in demand from consumers cause increasingly amplified shifts in demand at the levels of manufacturers, distributors, and wholesalers.