List one common statistical method used in data analysis.

Regression analysis is a widely utilized statistical method in data analysis that helps to examine the relationship between one or more independent variables and a dependent variable. This technique is particularly useful in predicting outcomes and identifying trends by quantifying how changes in input variables can affect the outcome.

In various fields such as economics, biology, and social sciences, regression analysis aids in understanding complex relationships and contributes to decision-making processes based on empirical data. It can reveal the strength and direction of the relationships between variables, enabling researchers to draw insights and make informed predictions.

While survey methodology, focus group analysis, and case study evaluation are valuable research methods, they do not primarily focus on the statistical relationships or the quantitative predictions that regression analysis offers. These methods are more qualitative in nature, emphasizing obtaining insights through observations and discussions rather than statistical relationships.