3: Say you are using a 2-month moving average to forecast ahead 4 periods (months). Which of the following is true?

When forecasting ahead 4 periods, the last period forecast will be based on just forecasted values.

The final period forecast, _t+4 will equal _t+3 .

Each of the four forecasted values will equal the mean of the last two actual (vs. forecasted) data values.

The value _t+4 should not be used as only a 2-month ahead forecast is valid.

4. The chapter used several terms to classify the models or techniques that use the past behavior of a time-series variable to predict the future. Which of the follow does not refer to a method of time-series analysis, but is a means to evaluate those methods?

Forecasting

Extrapolation

Trend

Mean Square Error

5. From year to year, monthly data on the number of flu cases seen in a hospital emergency department would likely show consistent increases during certain months, and decreases during others. This is an example of

exponential smoothing

seasonality

Holt's method

None of the above

7. Exponential smoothing is applicable to non-stationary data.

true

false

10. MAD, MAPE, MSE and RMSE are measures of model accuracy.

true

false