Your question:

When does one uses the one way ANOVA TEST? give the stata command to be used State four assumption under the multiple linear regression model and describe briefly how you would address the problem of homoscedacity assuming the assumption is violated using stata

Assignment Help Answers with Step-by-Step Explanation:

One-Way Analysis of Variance (ANOVA):

Assumptions for Multiple Linear Regression:

When using multiple linear regression, there are several assumptions you should be aware of:

Addressing Heteroscedasticity in Stata:

If the assumption of homoscedasticity is violated (i.e., you have evidence of heteroscedasticity), you can address the issue using various techniques. One common approach is to perform a heteroscedasticity-robust regression using the "robvar" option in Stata. Here's how you can do it:

reg dependent_variable independent_variable(s), robust

The "robust" option adjusts the standard errors to account for heteroscedasticity. This approach is known as robust regression, and it provides more reliable parameter estimates in the presence of heteroscedasticity.