Difference between revisions of "ChiSquaredTest Command"
From GeoGebra Manual
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<noinclude>{{Manual Page|version=4.2}}</noinclude> | <noinclude>{{Manual Page|version=4.2}}</noinclude> | ||
{{command|statistics}} | {{command|statistics}} | ||
| − | ;ChiSquaredTest[ <Matrix | + | ;ChiSquaredTest[ <Matrix> ] |
| − | :Performs a [[w:Chi-squared_test| | + | :Performs a [[w:Chi-squared_test|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: | ||
:: <math> \text{expected count} = \frac{\text{row total} × \text{column total}}{\text{total observed counts}} </math> | :: <math> \text{expected count} = \frac{\text{row total} × \text{column total}}{\text{total observed counts}} </math> | ||
| − | :Results are returned in list form as {Probabilty value, | + | :Results are returned in list form as ''{Probabilty value, chi-squared test statistic}''. |
| − | ;ChiSquaredTest[ <List | + | ;ChiSquaredTest[ <List>, <List> ] |
:Performs a Goodness of Fit test that compares the given list of observed counts against the given 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, | + | :Results are returned in list form as ''{Probabilty value, chi-squared test statistic}''. |
| − | ;ChiSquaredTest[ <Matrix | + | ;ChiSquaredTest[ <Matrix>, <Matrix> ] |
| − | :Performs a [[w:Chi-squared_test| | + | :Performs a [[w:Chi-squared_test|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, | + | :Results are returned in list form as ''{Probabilty value, chi-squared test statistic}''. |
Revision as of 15:38, 2 September 2013
- ChiSquaredTest[ <Matrix> ]
- 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:
- \text{expected count} = \frac{\text{row total} × \text{column total}}{\text{total observed counts}}
- Results are returned in list form as {Probabilty value, chi-squared test statistic}.
- ChiSquaredTest[ <List>, <List> ]
- 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>, <Matrix> ]
- 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}.
