Which time series forecasting method is based on the assumption that future values of a series depend linearly on past values and past forecast errors?

What is the primary characteristic of a time series data set?

A. Random data

B. Data points are not related

C. Data is collected at irregular intervals

D. Data is collected over time

In time series analysis, what is the term for the repeating patterns that occur at regular intervals?

A. Outliers

B. Trends

C. Seasonality

D. Noise

Which type of time series data is characterized by a consistent upward or downward movement over time?

A. Stationary

B. Seasonal

C. Trend

D. White noise

What is the primary goal of "detrending" in time series analysis?

A. To remove seasonality from the data

B. To remove outliers from the data

C. To identify trends in the data

D. To add noise to the data