Match List-I with List-II
| List-I | List-II | ||
| Changes in data in time series | Component of Time Series | ||
| (A) | Changes which occur due to technological progress | (I) | Seasonal component |
| (B) | Changes which occur due to some unpredictable forces | (II) | Cyclical component |
| (C) | Changes which occur due to change in climate | (III) | Trend component |
| (D) | Changes which occur due to booms and depressions | (IV) | Irregular component |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A) - (III), (B) - (IV), (C) - (I), (D) - (II)
(A) Changes which occur due to technological progress
This matches (III) Trend component.
Technological progress, population growth and similar forces act slowly and steadily, giving the long-term movement of the series.
(B) Changes which occur due to some unpredictable forces
This matches (IV) Irregular component.
Floods, strikes, wars and other chance events cannot be predicted and follow no pattern.
(C) Changes which occur due to change in climate
This matches (I) Seasonal component.
Weather and seasons repeat within a year, producing regular short-term variation.
(D) Changes which occur due to booms and depressions
This matches (II) Cyclical component.
The business cycle of prosperity, recession, depression and recovery repeats over periods longer than a year.
So the matching is (A)-(III), (B)-(IV), (C)-(I), (D)-(II).