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Date: 28-2-2021
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Date: 10-1-2016
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Date: 9-2-2021
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Given two paired sets and of measured values, the paired -test determines whether they differ from each other in a significant way under the assumptions that the paired differences are independent and identically normally distributed.
To apply the test, let
(1) |
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(2) |
then define by
(3) |
This statistic has degrees of freedom.
A table of Student's t-distribution confidence intervals can be used to determine the significance level at which two distributions differ.
REFERENCES:
Goulden, C. H. Methods of Statistical Analysis, 2nd ed. New York: Wiley, pp. 50-55, 1956.
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