Question: Th e point-biserial correlation coeffi cient is an appropriate test statistic for data on what scale of measurement? a. Both factors are interval or ratio

Th e point-biserial correlation coeffi cient is an appropriate test statistic for data on what scale of measurement?

a. Both factors are interval or ratio data.

b. Both factors are ranked or ordinal data.

c. Both factors are dichotomous or nominal data.

d. One factor is a dichotomous or nominal variable, and a second factor is continuous

(interval or ratio) data.

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