Answer: A curve that represents the change in a series of data points collected over a given period of time.

## Explanation In business and economics, a **trend** refers to the general direction in which something is developing or changing over time. Option A correctly defines trend as "a curve that represents the change in a series of data points collected over a given period of time." ### Key Points: - **Trend** represents the underlying pattern or direction in data over time - It can be visualized as a curve (not necessarily a straight line) that shows the general movement - Trends help identify long-term patterns rather than short-term fluctuations - In time series analysis, trends are often separated from seasonal and cyclical components Option B is incorrect because it describes **trend extrapolation** or **trend forecasting** rather than the definition of trend itself. Trend extrapolation is a forecasting method that uses the identified trend to predict future values, but it's not the definition of what a trend is. ### Example: - In stock market analysis, an upward trend shows generally increasing prices over time - In economic data, a trend might show GDP growth over several years - The trend line can be linear, exponential, or follow other mathematical forms depending on the data pattern

Author: Tanishq Prabhu