What is a good response to the following post made by a classmate? Regression analysis is a tool used to study the connection between different things. For example, if you are looking at how education affects income. Using regression analysis, you gather information form a group of people, their education level and their current income. You then take the data on a graph and draw a line through it. This line would reveal if there is a trend. The trend we are looking for again is does more education usually mean more income or is there no clear pattern. The steepness of the line tells us how much one thing changes when the other is affected. For example it could show that every year of schooling, income goes up by a certain amount. The things to remember are that real life is complicated and there are often other factors involved. Regression analysis can help us understand relationships but is not always perfect