Final answer:
Trend analysis is a statistical technique used to examine and predict patterns or trends in data over time. It is commonly used in finance and marketing to make future predictions based on historical data. In mathematics, it can be done using methods like linear regression, moving averages, or exponential smoothing.
Step-by-step explanation:
Trend analysis is a statistical technique used to examine and predict patterns or trends in data over time. It involves analyzing historical data and identifying patterns or relationships that can help in making future predictions.
For example, in finance, trend analysis can be used to analyze stock prices over time to predict future trends. In marketing, trend analysis can be used to analyze sales data to identify market trends.
In mathematics, trend analysis can be done using various methods such as linear regression, moving averages, or exponential smoothing.