Which of the following statements is true?
A)When approximating the sample mean for grouped data we assume that the midpoint of each class closely approximates the mean of observati ons in the class.
B)When approximating the sample mean for grouped data we cannot assume that the midpoint of each class dosely approximates the mean of observations in the class.
C) Descriptive measures for grouped data are not possible.
D )None of these choices are correct.

Question

Quizplus · Accepted Answer

When approximating the sample mean for grouped data, we assume that the midpoint of each class closely approximates the mean of observations in the class. This is because the midpoint is a representative value for the range of observations in the class, and it is used to simplify the calculations.

Which of the Following Statements Is True