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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: Psychol Assess. 2016 Aug 8;29(4):446–457. doi: 10.1037/pas0000356

Table 2. Average agreement for different achievement tests at different cut points by varying levels of reliability.

Achievement < 85 Achievement < 90
Product of reliabilities Selection N POa PA NAb POa PA NAb
0.49 3875.8 (51.3) 0.97 0.33 (0.11) 0.99 0.96 0.37 (0.10) 0.98
0.56 3784.0 (51.3) 0.97 0.37 (0.11) 0.98 0.96 0.40 (0.11) 0.98
0.63 3688.8 (50.8) 0.97 0.40 (0.11) 0.98 0.96 0.43 (0.11) 0.98
0.64 3675.3 (51.4) 0.97 0.43 (0.11) 0.99 0.96 0.46 (0.11) 0.98
0.72 3560.3 (51.4) 0.97 0.48 (0.11) 0.99 0.96 0.50 (0.11) 0.98
0.81 3417.8 (50.5) 0.97 0.56 (0.10) 0.99 0.96 0.59 (0.10) 0.98

Note: Values in parentheses are standard deviations.

a

Standard deviations omitted, all values = 0.02;

b

Standard deviations omitted, all values = 0.01.

PO = Overall Agreement; PA = Positive Agreement; NA = Negative Agreement.