Question

Fill in the blanks. 

1. The method of moving averages is used to find the _________

2. Most frequently used mathematical model of a time series is _________ 

3. The sale of air condition increases during summer is a ________ 

4. The fire in a factory is an example of ________ 

5. The best-fitting trend is one in which the sum of squares of residuals is _______

Answer 1

1. Secular trend 

2. Multiplicative model 

3. Seasonal variation 

4. Irregular variation 

5. Least