Answered: Study 3: Age & Pain. Using the same…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Study 3: Age & Pain.

Using the same data set PillShapeColor - use Pearson Correlation and simple linear Regression to create results and then summarize these in APA-style.

Run a Pearson Correlation on age and pain rating. Create a scatterplot with pain rating on Y and age on X axis.
Run a simple linear regression model with pain rating as DV and age as IV.

Regression → Linear Regression, choose your DV, IV(s) –use defaults settings.

1-What is the equation for the regression line? How much variance in pain is accounted for by age (R²)? Interpret this in context of the study (is this a lot of variance explained or not much).
2-Describe the regression results simply and clearly- include the slope and constant and describe what the slope means. Is age a significant predictor of perceived pain? Finally, describe what the model predicts about the pain rating of a person who is 40 years old and someone 70 years old.

ShapePill ColorPill PainRating
Age Gender
1
72
65
65
50
1
50
49
1
1
60
49
1
1
1
48
39
1
2
45
45
1
2
40
47
1
2
45
27
1
1
2
73
63
1
60
35
2
1
55
50
2
1
70
52
1
60
44
1
2
1
57
47
1
2
1
70
59
2
2
35
42
2
2
47
50
2
2
39
53
2
2
35
43
1
2
2
43
39
2
78
65
1
66
51
1
51
46
1
1
58
56
1
49
40
1
1
2
40
47
1
2
43
50
1
2
42
30
1
2
81
59
1
2
26
37
1
2
57
48
2
72
56
2
1
65
41
1
2
54
48
1
2
1
72
60
33
43
2
2
50
48
2
22
53
2
2
27
44
2
2
46
39
1,

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