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Rodney wants to test the relationship between college graduation rank and annual income. If income is...

Rodney wants to test the relationship between college graduation rank and annual income. If income is measured on a ratio scale, the appropriate relationship test for Rodney to use is the:

A. Group of answer choices

B. chi square test of independence

C. independent-samples t test

D. Spearman r

Pearson r

math   Statistics-And-Probability   
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Answer #1

Answer:

C. Spearman r

Explanation:

For the given scenario, the variable college graduation rank is the ordinal scaled variable and the variable annual income is the ratio scaled variable. So, for the variables with ordinal scale and ratio scaled we use the Spearman correlation. If both variables are of either interval or ratio scaled, then we use the Pearson correlation.

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