Research question where dummy variables

Describe an example of a research question where dummy variables should be used. Describe the characteristics of the categorical variable and its usage in explaining the variance in the dependent variable. Then, discuss whether you feel separate subset analysis is also warranted. Explain why (or why not) you feel separate linear regression analysis should be performed. What is the added benefit of the additional analysis In your two replies to classmates, provide insights for the similarities and dissimilarities between their example and yours.Please write at least 350 words in your primary post