Chapter 6 Reliability

Reliability Coefficient (rxx) - most simply, the test correlated with itself using Pearson's r. Use meaningful subscripts like "rx1x2" to keep things clear. If the above is true then: 2X = 2T + 2E. and . rxx = 2T / 2X. 10 = 8 + 2 .8 = 8 / 10 (example with a reliable test) Factors Affecting Reliability (actual or apparent) ... ................
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