Using two different measurement instruments (A and B) to measure the same variable, a researcher collected data from a group of subjects. The researcher wants to compare subjects’ scores on the two different sets of data. Descriptive statistics are as follows:
Range Mean S.D.
Instrument A 20 to 100 60 9
Instrument B 30 to 150 92 15
Data from the first 3 subjects is as follows:
Score on A Score on B
Subject 1 68 124
Subject 2 32 58
Subject 3 84 130
a) Compare subjects’ scores across tests A and B (SHOW YOUR Z-SCORE CALCULATIONS).
The question belongs to Statistics and it discusses about comparing subjects’ scores with standard deviation.
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