\int e^{x}\cos (x)dx - Integral (Antiderivative) Calculator - Symbolab. The One-Sample t Test. We are going to use an example for the one sample t-test about whether the academic staff at the UNE psychology department publish differently than the national average of 8 publications per staff member between 1974 and 1996.
A random sample of size 5 was taken from the 17 members of academic staff here at UNE. The data obtained were : 3, 21, 1, 15, and 7. The sample mean is = 9.4 and the sample standard deviation, s, is 8.41. F检验.
Wolfram MathWorld: The Web's Most Extensive Mathematics Resource. Standard Deviation and Variance. Deviation just means how far from the normal Standard Deviation The Standard Deviation is a measure of how spread out numbers are.
Its symbol is σ (the greek letter sigma) The formula is easy: it is the square root of the Variance.