Suppose we are interested in the average reading achievement test score of all the currently enrolled students in second grade at a school with three...

Suppose we are interested in the average reading achievement test score of all the currently enrolled students in second grade at a school with three second grade classrooms. (One of which is Zaphod the Destroyer's classroom)

The set of test scores for Zaphod the Destroyer's class comprise

Question 25 options:

an element.

a sample.

a statistic.

a population.