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Table 1 Data used by Hankins's to illustrate the calculation of delta: where two scales are administered to 10 subjects.

From: Discrimination and reliability: Equal partners?

Subject

A

B

C

D

E

F

G

H

I

J

Response I

1

2

2

3

3

3

3

4

4

5

Response II

1

1

1

1

1

1

1

1

3

5

Average

1.0

1.5

1.5

2.0

2.0

2.0

2.0

2.5

3.5

5.0