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 average test score of Zaphod the Destroyer's class is
Question 26 options:

an element.

a sample.

a statistic.

a population.

The average test score of Zaphod the Destroyer's class is a statistic.