Dating sites iq test
Here are the results from three teams that tried this (source, source, source): These differ a little in that the first one assumes away all noise (“unexplained variance”) and the latter two keep it in.But they all agree pretty well that individual factors are most important, followed by school and teacher factors of roughly equal size.Teacher factors explain somewhere between 5% and 20% of the variance.Other studies seem to agree, usually a little to the lower end.
For example, Goldhaber, Brewer, and Anderson (1999) find teachers explain 9% of variance; Nye, Konstantopoulos, and Hedges (2004) find they explain 13% of variance for math and 7% for reading.
The American Statistical Association summarizes the research as “teachers account for about 1% to 14% of the variability in test scores”, which seems about right.
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