For each pair of X and Y variables, decide which correlation coefficient to comp

Question

For each pair of X and Y variables, decide which correlation coefficient to compute. Assume that the relationship between X and Y is linear. A criminologist ranks 50 individuals convicted of a crime in terms of the seriousness of their offense. X = the seriousness rank the criminologist assigned to the crime, and Y = the time served in prison by the offender. X = a person's gender, and Y = whether the person is a smoker. X = a person's life stress score (number of threatening activities over the past 3 months), and Y = the person's number of chronic health problems. X = whether a film's cast includes an A-list movie star, and Y = the film's box office revenue.

Explanation / Answer

a) Spearman rank corrleation

b) Phi coefficient

c) Pearson r  corrleation

d) Point biserial  corrleation

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