Match List-I with List-II

List-I	List-II
(A) A fire in a factory causing production delay for some time is	(I) Secular trend
(B) Technological progress is	(II) Seasonal trend
(C) The rise in prices before big festival is example of	(III) Irregular trend
(D) Rise and fall of share market is	(IV) Cyclic trend

Choose the correct answer from the options given below:

Understanding the four types of trends in time series:

Secular Trend refers to long-term, gradual changes occurring over years or decades, such as technological improvements or population growth.

Seasonal Trend involves regular patterns that repeat at fixed times every year, like increased sales during specific seasons or price changes before annual festivals.

Irregular Trend represents unexpected, random events that occur once and cannot be predicted, such as natural disasters or accidents.

Cyclic Trend shows up-and-down patterns over long periods (more than a year) that are not regular like seasonal patterns, such as economic boom and recession cycles.

A fire in a factory causing production delay is an unexpected and random event that occurs once and cannot be predicted. This matches with Irregular trend (III).

Technological progress represents a slow, gradual change happening over many years. It is a long-term change that is neither seasonal, random, nor cyclic. This matches with Secular trend (I).

The rise in prices before big festivals occurs at the same time every year. This pattern repeats annually and is predictable. This matches with Seasonal trend (II).

The rise and fall of the share market represents long cycles spanning multiple years. These cycles are not seasonal and show boom-bust patterns that repeat over time. This matches with Cyclic trend (IV).

The matching is:

(A) - (III)

(B) - (I)

(C) - (II)

(D) - (IV)