Paired t-Test
المؤلف:
Goulden, C. H
المصدر:
Methods of Statistical Analysis, 2nd ed. New York: Wiley,
الجزء والصفحة:
pp. 50-55
2-5-2021
2276
Paired t-Test
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
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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