A researcher wishes to estimate the reliability of the FYI (Functional Youth Indicator) - a new test of adolescent shyness

The test is composed of a total of 30 items, and the researcher splits the scoring in order to compare each subject's score on the odd numbered items with those on the even numbered items. A total of 10 teen-age males was randomly selected and their scores were as follows:

Odd Even
Subject # X Y
1. 10 9
2. 8 11
3. 12 12
4. 10 9
5. 11 10
6. 9 10
7. 10 9
8. 15 14
9. 5 6
10. 10 10

Estimate the reliability of the whole test.


What will be an ideal response?


Spearman Brown = .923

Psychology

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