F Distribution: Difference between revisions
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{{Learning concept | {{Learning concept | ||
|Description=A frequency distribution that depends upon 2 sets of degrees of freedom- the degrees of freedom in the numerator and the degrees of freedom in the denominator. | |Description=A frequency distribution that depends upon 2 sets of degrees of freedom - the degrees of freedom in the numerator and the degrees of freedom in the denominator. | ||
The F distribution is used to test whether two population variances are the same. Its characteristics are: | |||
It is continuous. | |||
Its values cannot be negative. | |||
It is positively skewed. | |||
There's a family of F distributions. each time the degrees of freedom in either the numerator or the denominator changes, a new distribution is created. | |||
|Wikipedia reference=http://en.wikipedia.org/wiki/F-distribution | |Wikipedia reference=http://en.wikipedia.org/wiki/F-distribution | ||
}} | }} | ||
Latest revision as of 00:30, 24 January 2014
Description
A frequency distribution that depends upon 2 sets of degrees of freedom - the degrees of freedom in the numerator and the degrees of freedom in the denominator.
The F distribution is used to test whether two population variances are the same. Its characteristics are:
It is continuous.
Its values cannot be negative.
It is positively skewed.
There's a family of F distributions. each time the degrees of freedom in either the numerator or the denominator changes, a new distribution is created.
Concept Prerequisite
Wikipedia Reference
http://en.wikipedia.org/wiki/F-distribution
Learning Material
Covered in Topic(s)
| Analysis of Variance |
| Frequency Distribution Cross Tabs & Hypotheses Testing |