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Created: Oct 16, 2018
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Decker, Matthew, Lab 6

1. Do Homework Averages affect Final Exam scores?

2. Explanatory variable is Homework Averages, Response variable is Exm Averages

3. y= 0.9364x-4.2111

4. Correllation coefficient = 0.7319,  R-sq = 0.53562008

5. Linear model is appropriate because of its lack of outliers.

6. 53.56% of the variation in distance from our data is explained through the least-squares regression line.

Result 1: Residuals Box Plot   [Info]

Result 2: Residuals   [Info]

Result 3: Dot Plot line   [Info]

Result 4: Regression Results   [Info]
Simple linear regression results:
Dependent Variable: Final Exam
Independent Variable: HW Average
Final Exam = -4.2111136 + 0.9363976 HW Average
Sample size: 34
R (correlation coefficient) = 0.7318607
R-sq = 0.53562008
Estimate of error standard deviation: 16.614186

Parameter estimates:
ParameterEstimateStd. Err.AlternativeDFT-StatP-value
Intercept-4.211113611.949916 ≠ 032-0.352396930.7269
Slope0.93639760.15413228 ≠ 0326.0752856<0.0001

Analysis of variance table for regression model:
SourceDFSSMSF-statP-value
Model110188.06110188.06136.909095<0.0001
Error328832.9978276.03118
Total3319021.059

Residuals stored in new column: Residuals