QUESTION 1

Students are ranodomly selected for a study attempting to investigate whether there is an assocation between the number of missed classes and test scores.

The results of this study are as follows (also available in Assignment 8_CorrReg.sav and Assignment 8_CorrReg.xlsx

Absences	TestScore
1	95
0	90
2	90
6	55
4	70
3	80
3	85
2	85
0	90

Calculate (using SPSS or other tool) the value ofPearson correlation (r) for this data (include correct sign negative or positive)

QUESTION 4

You perform a simple linear regression analysis with the number of absences as the independent (predictor) variable and the test scores as the dependent (result) variable.

How much of the variability in the test score do you estimate can be attributed to the absences (predictor variable).

Express as a two digit number (for example 34.9% or .349 enter the following 35)

QUESTION 5

You propose a fomula representing the association between these two variables.

Test Score = Slope * Absences + Yintercept

Based on your analysis what is the value of the slope (include sign if it is negative)

QUESTION 6

You propose a fomula representing the association between these two variables.

Test Score = Slope * Absences + Yintercept

Based on your analysis what is the value of the y intercept (include sign if it is negative)