Seasonality in a time series is indicated by
A) regular, repeating patterns in the data around a trend line.
B) regular patterns in the data around a trend line.
C) irregular patterns in the data around a trend line.
D) random patterns in the data around a trend line.

Question

Quizplus · Accepted Answer

Seasonality refers to regular, repeating patterns in a time series that are related to seasonal factors such as time of year, day of the week or month. These patterns can be observed around a trend line, indicating that they are not simply random fluctuations in the data. Therefore, option A is the best choice as it specifies the presence of regular, repeating patterns around a trend line.

Seasonality in a Time Series Is Indicated by