This article delves into regression analysis, a way to study relationships between different things. It looks at how one thing (Y) is related to other things (X). The tests in this study check if the individual factors (X) have a real impact on the thing we care about (Y). It covers tests for both simple situations with just one factor, and more complex ones with multiple factors. They also test if all factors together have an effect on Y. The findings show that these tests are crucial in figuring out how different factors influence the outcome we're interested in.