Irregular trends in a time series are caused by
(A) Epidemics
(B) Strikes
(C) Festival season
(D) Floods
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A), (B) and (D) only
Irregular variations are caused by sudden, unpredictable events that do not repeat in a regular pattern. Seasonal variations repeat at the same time every year.
Checking the statements
(A) Epidemics — Correct. An epidemic is sudden and cannot be predicted.
(B) Strikes — Correct. A strike is an unforeseen disturbance.
(C) Festival season — Incorrect. Festivals come at the same time every year, so they cause seasonal, not irregular, variations.
(D) Floods — Correct. Floods are natural calamities that cannot be predicted.