NUR1 422 Lecture Notes - Lecture 13: Audit Trail, Correlation And Dependence, Standard Deviation
21 Sep 2016
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Sampling error: arises when sample is not representative of population increase population size. Random error: poor precision, nonspecific causes, not reproducible. Bias is consistent or uniform: scale consistely measures 2kg above weight. Reliable (precision) but not valid: target hits all together but not in middle spot. Reliability coefficient=r 0. 00-1. 00 as r increases the more reliable the measurement.
