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Help with Reliability please?

cleo

New member
Jun 10, 2013
1
Hi!

I am having a terrible time trying to calculate reliability (I guess this would be inter-rater reliability?) for a project. I have been working on it for days trying to use all the various formulas I find and I'm just at a loss.

All I'm trying to do is come up with a reliability coefficient for the 34 client scores below. As I understand it, the reliability should be pretty close to the average (which for the scores below is 83). But I keep coming up with weird numbers like 20. Any help at all would be greatly appreciated!

Client Score
A 83
B 80
C 80
D 83
E 86
F 80
G 85
H 79
I 80
J 89
K 87
L 90
M 86
N 74
O 86
P 80
Q 73
R 81
S 92
T 87
U 85
V 89
W 84
X 81
Y 78
Z 86
AA 79
BB 86
CC 84
DD 79
EE 81
FF 90
GG 85
HH 89