Perform multiple regression, Basic Statistics

You have collected data on 4 continuous variables (diastolic BP, age, weight, and average number of minute of exercise per week)you think may be related to total cholesterol levels. Use the attached file cholesterol.xls to perform research on this question.

The regression model

a.) Use Excel to perform a multiple regression using all the independent variables. (There is no answer to give for this step.)

b.) Write the regression model based on your results (include both your significant and non-significant betas in this model).

c.) Report your intercept. Is the intercept meaningful? Why or why not?

d.) Report your betas (slopes). Which of these betas is significant?

e.) Give interpretations for each of your significant betasin terms of the original research question.

Be specific and include appropriate units in your interpretations!

As an example, if your independent variable was weight and your beta for weight was 5, you should say, "For every 1 pound increase in weight, total cholesterol increases by 5 mg/dL, controlling for diastolic BP, age, and average minutes of exercise per week." Don't just say "For every unit increase in weight...".

You have reason to suspect that there may be interaction between the diastolic BP and Minutes of Exercise.  In your Excel file, construct an interaction term for these two variables and rerun the multiple regressionwith the interaction term included.

f.) Report the beta for interaction. Isthere significant interaction between A and B?

g.) Should you leave the interaction term in the model? Why or why not?

Posted Date: 3/6/2013 4:21:50 AM | Location : United States







Related Discussions:- Perform multiple regression, Assignment Help, Ask Question on Perform multiple regression, Get Answer, Expert's Help, Perform multiple regression Discussions

Write discussion on Perform multiple regression
Your posts are moderated
Related Questions
The next step is to determine the sources of data to be used. The researcher has to decide whether he has to collect primary data ror depend exclusively on secondary data. Sometime

Use the following four data sets for problem 1.  Be aware that this is a very interesting series of data sets with some special properties. I do not have data files for these data,

what are the function of statistics in business onganizations?

How would you journalize this transaction? Purchased used truck for $6,240, paying $3,120 cash and the balance on account.

Budgetary accounts Accounts used to go through the adopted budget into the all-purpose ledger as part of the administration control method of formal budgetary addition.

solving problem in skewness and kurtosis?

1. A researcher is comparing two middle school 7th grade classes. One class at one school has participated in an arts program (involving putting on a musical play) which emphasized

#question An electronic assembly is subjected to a final functional test. Suppose that defects occur at random in these assemblies, and that these defects occur according to a Pois

Ask question #MinimumAgency revenues. An economic consultant was retained by a large employment agency in a metropolitan area to develop a regression model for predicting monthly a

what are the condition to use probable error