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- 2011-7-11
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- 2016-4-19
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I have the following queries on the t-test,
1) Why with sample correlation the t-test formula is different from what we saw in Level-1 t-test formula? As we know, in Level-1 the t-test formula was (estimated value - hyphotesized values)/ std. error
2) Why with sample correlation the DF is n-2 here, while in Level-1 formula it was n-1?
3) Why DF is included in the formula itself here while in Level-1 we had to look up DF in the t Table?
Apprecite if someone can clarify. Many thanks in advance. |
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发表于 2011-7-11 19:18
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