Quarterly enrollments in business statistics class for three years are shown in the table below.Compute the four-quarter centered moving averages.

Centered Moving Averages

A sequence of averages derived from successive segments of a set of numbers, calculated by placing the average directly in the center of the time period it covers.

Quarterly Enrollments

The number of individuals who enroll or register in a program or institution during a specific quarter of the year.

Business Statistics

The application of statistical methods and techniques to business data for the purpose of making informed decisions.