Which type of sample uses data from the same group and compares two variables, such as comparing the average number of soft drinks consumed each day for a group of females with the average number of cups of coffee consumed each day for the same group of females?
A) related
B) parametric
C) nonparametric
D) independent
E) group

Question

Quizplus · Accepted Answer

A related sample compares two variables from the same group, before and after an intervention or treatment, or compares two variables from paired observations. In this case, the same group of females is being compared for their daily consumption of soft drinks and cups of coffee. A parametric sample assumes that the variables are normally distributed and have equal variances, while a nonparametric sample does not make these assumptions. An independent sample compares two variables from different groups, while a group sample is not a recognized statistical term.

Which Type of Sample Uses Data from the Same Group