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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The Answer of 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.

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