| Hypothesis tests for the
means are hypothesis
tests used to test the means
of samples in order to make inferences about
the means of the populations from which
they are drawn.
Parametric
tests (tests that rely on the
data conforming to a normal distribution)
include:
| t-test |
comparing the mean
against a specified value using a sample
of 30 items or fewer |
| Two
sample t-test |
comparing the means
of two samples of 30 items or fewer |
| Paired
t-test |
comparing the means
of two samples of 30 items or fewer,
when the items in the two samples can
be 'paired' |
| z-test |
comparing the the
mean against a specified value when
the sample has more than 30 items or
the standard deviation is known |
Nonparametric
tests for the mean include:
If there are more than two populations
the Analysis of Variance (ANOVA)
is used.
|
