Practice Lab - Multiple Linear Regression for Cereal Rating Data
Set
- In this lab you will work with cerealsTrainSetNov23 and
cerealsTestSetNov23 Excel files (same files you worked on Friday and Monday)
- You will work with SAP and QlikView and document results in
this Word
File: MultipleLinearPracticeSummaryPractice.docx
- Open SAP
- Load cerealsTrainSetNov23 Excel file.
- Run Multiple Linear Regression Models listed in the Word file. Save
these models and run these models on Test file.
- Document R^2, Adjusted R^2 and Multiple Linear Regression Formula
for each Model in the Word file MultipleLinearPracticeSummaryPractice.docx
- Rate the models based on R^2 and adjusted R^2. Assume, 1 is a HIGHEST RATING
- Open QlikView Test file you worked on Friday Monday.
- Complete Straight Table Chart adding expressions to calculate Predicted rating for EACH model and SSE for Each
model
IMPORTANT!!!For ALL expressions on Number Tab select Fixed to 2 Decimals
- Complete Combo Chart to display predicted rating vs actual rating for all 5 models.
- Find Test_R^2 = 1-SSE/SST for each model on the Test Data
- Document SSE and Test_R^2 for each model in the Word File
- Complete Correlation Table in the Word File. To calculate correlations, add Text Object and use the following
formula:
=Num(Correl(Variable1, Variable2))
- Analyze results.
Answers