Difference between revisions of "ChiSquaredTest Command"
From GeoGebra Manual
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{{command|statistics}} | {{command|statistics}} | ||
;ChiSquaredTest[ <Matrix of Observed Counts> ] | ;ChiSquaredTest[ <Matrix of Observed Counts> ] | ||
| − | :Performs a Chi Squared test that compares the given matrix of observed counts against the matrix of expected counts determined by | + | :Performs a Chi Squared test that compares the given matrix of observed counts against the matrix of expected counts determined by the hypothesis of independence. |
:The matrix of expected counts is calculated internally. Each expected count is found from the row and column totals of the given matrix of observed counts using the rule: | :The matrix of expected counts is calculated internally. Each expected count is found from the row and column totals of the given matrix of observed counts using the rule: | ||
| − | ::expected count = (row total x column total) / | + | ::expected count = (row total x column total) / total observed counts |
:Results are returned in list form as {Probabilty value, Chi Squared test statistic}. | :Results are returned in list form as {Probabilty value, Chi Squared test statistic}. | ||
Revision as of 18:49, 2 September 2012
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This page is about a feature that is supported only in GeoGebra 4.2. |
- ChiSquaredTest[ <Matrix of Observed Counts> ]
- Performs a Chi Squared test that compares the given matrix of observed counts against the matrix of expected counts determined by the hypothesis of independence.
- The matrix of expected counts is calculated internally. Each expected count is found from the row and column totals of the given matrix of observed counts using the rule:
- expected count = (row total x column total) / total observed counts
- Results are returned in list form as {Probabilty value, Chi Squared test statistic}.
- ChiSquaredTest[ <List of Observed Counts>, <List of Expected Counts> ]
- Performs a Goodness of Fit test that compares the given list of observed counts against the given list of expected counts.
- Results are returned in list form as {Probabilty value, Chi Squared test statistic}.
- ChiSquaredTest[ <Matrix of Observed Counts>, <Matrix of Expected Counts> ]
- Performs a Chi Squared test that compares the given matrix of observed counts against the given matrix of expected counts.
- Results are returned in list form as {Probabilty value, Chi Squared test statistic}.
