Statistics for the Terrified: Glossary

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H0 (null hypothesis):

The null hypothesis is an aunt sally put forward to be disproved, usually stating that there is no difference or relationship between the items under study.
See also H1.

H1 (alternative hypothesis):

Sometimes we propose an alternative to the null hypothesis, to be accepted if the null hypothesis is rejected. If the null hypothesis is that the mean is three, we reject it if the mean is not three. The alternative hypothesis may state that the mean is 3.5. Note that it is possible to reject both the null and alternative hypotheses. (The statement that the mean is not equal to three is known as the complement of the null hypothesis.
See also H0.

Histogram:

A histogram is a bar or column chart, showing the frequency with which certain values occur in a sample. It is analogous to the distribution of a population.

Hypothesis:

See also Alternative hypothesis, H0, H1, Null hypothesis.

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