Question

Topic 6 DQ 2

Given the other statistical tests discussed so far such as z and t-tests, anova test, what strengths does linear regression provide that the other tests do not? Identify a peer-reviewed study that uses linear regression in its analysis. Explain why linear regression was used and discuss one challenge in interpreting the results.

Answer 1

Z Test ,t test, ANOVA test gives information about the population mean whether this is significant or not . Whether population mean is differ significantly or not .But this test are not helpful to gives relationship between two variables .in this scenario linear regression helps . This gives an idea about the linear relationship between two variables . It helps to predict another variable. So this test is differ from the other .Now suppose we have to predict height regarding corresponding weight here weight is a independent variable while height is dependent variable so we develop a model regarding height and weight and with the help of that linear regression we predict height on given weight.  

This is how linear regression is used to give the relationship between two variables. And helps to predict the dependent variable.