Difference between revisions of "ChiSquaredTest Command"
From GeoGebra Manual
(command syntax: changed [ ] into ( )) |
m (;ChiSquaredTest( <Observed Matrix>, <Expected Matrix> )) |
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: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}''. | ||
:{{example|1=<code><nowiki>ChiSquaredTest({{1, 2, 1}, {3, 2, 3}})</nowiki></code> yields ''{0.69, 0.75}''.}} | :{{example|1=<code><nowiki>ChiSquaredTest({{1, 2, 1}, {3, 2, 3}})</nowiki></code> yields ''{0.69, 0.75}''.}} | ||
| − | ;ChiSquaredTest( <List>, <List> ) | + | ;ChiSquaredTest( <Observed List>, <Expected List> ) |
:Performs a [[w:Goodness of fit|Goodness of Fit test]] that compares the given list of observed counts against the given list of expected counts. | :Performs a [[w:Goodness of fit|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}''. | :Results are returned in list form as ''{Probabilty value, chi-squared test statistic}''. | ||
:{{example|1=<code><nowiki>ChiSquaredTest({1, 2, 3, 4}, {3, 2, 4, 2})</nowiki></code> yields ''{0.31, 3.58}''.}} | :{{example|1=<code><nowiki>ChiSquaredTest({1, 2, 3, 4}, {3, 2, 4, 2})</nowiki></code> yields ''{0.31, 3.58}''.}} | ||
| − | ;ChiSquaredTest( <Matrix>, <Matrix> ) | + | ;ChiSquaredTest( <Observed Matrix>, <Expected Matrix> ) |
:Performs a [[w:Chi-squared_test|chi-squared test]] that compares the given matrix of observed counts against the given matrix of expected counts. | :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, chi-squared test statistic}''. | :Results are returned in list form as ''{Probabilty value, chi-squared test statistic}''. | ||
:{{example|1=<code><nowiki>ChiSquaredTest({{1, 2, 1}, {3, 2, 3}}, {{2, 3, 2}, {4, 2, 3}})</nowiki></code> yields ''{0.45, 1.58}''.}} | :{{example|1=<code><nowiki>ChiSquaredTest({{1, 2, 1}, {3, 2, 3}}, {{2, 3, 2}, {4, 2, 3}})</nowiki></code> yields ''{0.45, 1.58}''.}} | ||
Latest revision as of 23:14, 15 December 2019
- 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}.
- Example:
ChiSquaredTest({{1, 2, 1}, {3, 2, 3}})yields {0.69, 0.75}.
- ChiSquaredTest( <Observed List>, <Expected 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}.
- Example:
ChiSquaredTest({1, 2, 3, 4}, {3, 2, 4, 2})yields {0.31, 3.58}.
- ChiSquaredTest( <Observed Matrix>, <Expected 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}.
- Example:
ChiSquaredTest({{1, 2, 1}, {3, 2, 3}}, {{2, 3, 2}, {4, 2, 3}})yields {0.45, 1.58}.
