Jake, Rob, Sarah, and Becky each conducted surveys on the number of pets people have in their homes. Then they each answered the question below: “Must all measures of central tendency (mean, median, mode) appear as a number in the set of data collected?”

Which student’s statement is true?

A.
Sarah says this is sometimes true because the mean and median may or may not be in the set of data, but the mode is always in the set of data.

B.
Rob says this is never true because all the measures of central tendency are never numbers
in the set of data.

C.
Becky says this is sometimes true because the mean and mode may or may not be in the set
of data, but the median is always in the set of data.

D.
Jake says this is always true because all the measures of central tendency also have to be
numbers in the set of data.