A social researcher is interested in studying whether social class influences li

Question

A social researcher is interested in studying whether social class influences life expectancy. The researcher split social class into three categories: upper class, middle class, and lower class. Life expectancy was measured in years. Which statistical procedure would one apply to testing for differences between social class and life expectancy.

A.) One-way Chi-square'

B.) Two-way Chi-square

C.) ANOVA

D.) t-test for one sample

E.) t-test for independent samples

F.) t-test for proportions comparisons

G.) t-test for same sample measured twice

H.) Pearson's r

I.) None of the above

Explanation / Answer

The correct option is C) ANOVA

Reason: When we want to test "whether the population means of more than two groups are same" then the

best method to test means of more than two groups simultaneously is ANOVA (that is analysis of variance).

in this example there are one factor social class with three different groups and we want to test the life

expectancy is same for each group or at least one group is difference life expectancy with other groups.

Therefore the correct answer of the question is C) ANOVA.

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