Minitab® – Simple Linear Regression
We previously created a scatterplot of quiz averages and final exam scores and observed a linear relationship. Here, we will use quiz scores to predict final exam scores.
- Open the Minitab file: Exam.mwx (or Exam.csv)
- Select Stat > Regression > Regression > Fit Regression Model...
- Double click Final in the box on the left to insert it into the Responses (Y) box on the right
- Double click Quiz_Average in the box on the left to insert it into the Continuous Predictors (X) box on the right
- Click OK
This should result in the following output:
Final = 12.1 + 0.751 Quiz_Average
Analysis of Variance
|Source||DF||Adj SS||Adj MS||F-Value||P-Value|
Fits and Diagnostics for Unusual Observations
R Large residual
In the output in the above example we are given a simple linear regression model of Final = 12.1 + 0.751 Quiz_Average
This means that the y-intercept is 12.1 and the slope is 0.751.