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- 2011-7-11
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- 2016-4-19
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The t-test you're referring to for level 2 is for testing the significance of the correlation coefficient. You obtain the t statistic through a different formula.
DF is n-2 instead of n-1 because you're estimating 2 parameters: the intercept (b0) and the slope coefficient (b1). |
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发表于 2011-7-11 19:18
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