TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App ˆ Tests Menu 158
Chi2 GOF
Description
2 ˆ (
Tests) Æ 7:Chi2 GOF for the TI-89
ˆ (Tests) Æ 7:Chi2 GOF for the TI-92 Plus / Voyage™ 200 PLT
Chi2 GOF performs the chi square goodness of fit test to confirm that sample data is from
a population that conforms to a specified distribution. For example,
Chi2 GOF can
confirm that the sample data came from a normal distribution.
Inputs
Observed List List of observed sample values.
Expected List List of expected sample values from a specified distribution.
Deg of Freedom, df Count of sample categories minus sample restrictions.
Results
(Calculate or Draw)
Calculate: Display numerical and symbolic test results in a dialog box.
Draw: Draw a graph of the test results.
Outputs
Outputs Stored to Description
Chi-2 chi2 Chi square stat: sum((observed - expected)^2/expected
P Value pval Least probability at which the null hypothesis can be rejected.
df df Degrees of freedom for the chi square statistics.
Comp Lst* complist Elemental chi square statistic contributions.
* The output variable is pasted to the end of the list editor when Results!Editor option is YES,
(located in ƒ (Tools) 9:Format).
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