Suppose you wanted to use a time series technique to predict the population of a Australia in the year 2020 using annual population data from 1980-2017. The most appropriate forecasting method or methods to use would be

Select one:

a.

Moving Average

b.

Simple Exponential Smoothing (SES)

c.

Trend extrapolation equation

d.

Holt's Exponential Smoothing (HES)

e.

Both (c) and (d) would be appropriate