MISCELLANEOUS EXERCISE - 4 - State whether each of the following is True or False.

1. The secular trend component of time series represents irregular variations. -False

2. Seasonal variation can be observed over several years. – True

3. Cyclical variation can occur several times in a year.  -False

4. Irregular variation is not a random component of time series.  -False

5. Additive model of time series does not require the assumption of independence of its components.  -False

6. Multiplicative model of time series does not require the assumption of independence of its components. – True

7. Graphical method of finding trend is very complicated and involves several calculations.  -False

8. Moving average method of finding trend is very complicated and involves several calculations.  -False

9. Least squares method of finding trend is very simple and does not involve any calculations.  -False

10. All the three methods of measuring trend will always give the same results.  -False