# 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**