What is the Pearson Correlation between the two sets of test scores of the follo
ID: 3363734 • Letter: W
Question
What is the Pearson Correlation between the two sets of test scores of the following test scores:
Subject # Brain Scaled Score WAIS-R IQ SCORE
1 50 100
2 60 115
3 65 120
4 40 96
5 35 100
6 40 85
7 60 115
8 55 105
9 50 103
10 45 90
11 52 120
12 48 105
13 51 110
14 49 95
15 50 100
16 50 100
17 37 95
18 63 112
19 50 100
20 50 100
Explanation / Answer
X Values
= 1000
Mean = 50
(X - Mx)2 = SSx = 1248
Y Values
= 2066
Mean = 103.3
(Y - My)2 = SSy = 1726.2
X and Y Combined
N = 20
(X - Mx)(Y - My) = 1131
R Calculation
r = ((X - My)(Y - Mx)) / ((SSx)(SSy))
r = 1131 / ((1248)(1726.2)) = 0.7706
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