Due to which of the following, the irregular variations in a time series are caused:
(A) Floods
(B) Rise in prices before festivals
(C) A fire in a factory
(D) Epidemics
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (C) and (D) only
Irregular variations are caused by sudden, unpredictable events that follow no pattern.
(A) Floods — Correct. A natural calamity that cannot be predicted.
(B) Rise in prices before festivals — Incorrect. It recurs at the same time every year, so it is a seasonal variation.
(C) A fire in a factory — Correct. An accidental, one-time event.
(D) Epidemics — Correct. They strike suddenly and follow no regular pattern.