.

Suppose the following data shows the enrollment for College for the last 6 years (2015 to

2020).

Year

1

2

3

4

5

6

Enrollment

700

740

680

800

840

890

a.

Develop a three-year moving average for this time series. Compute MSE and a forecasted

enrollment for 2021.

b.

Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent, and

1/6 for third most recent, compute estimated enrollment for 2021 using three year

weighted moving average.

c.

What is the estimated enrollment for 2021 if you use simple linear regression analysis?