CASCALC89 COMMAND · NOT ON THE TI-89
FTest_2Samp
Performs a two sample F test that compares the variances of two populations. The results are stored in stat variables such as stat.F.
Syntax
FTest_2Samp List1,List2[,Freq1[,Freq2[,Hypoth]]]
- Group
- Statistics
- Arguments
- Takes two data lists with optional frequencies and hypothesis, or the matching summary statistics as in the example.
- Availability
- Included
- Origin
- TI-Nspire CAS style command; the TI-89 Titanium handheld does not have it
Example
| Input | Result |
|---|---|
| FTest_2Samp 2,8,3,8,0:stat.F | 0.444444444444 |
Typing FTest_2Samp 2,8,3,8,0:stat.F on the home screen and pressing ENTER returns 0.444444444444.
Related commands
- LinRegBxFits a line y=a+b·x to data with least squares regression.
- LinRegMxFits a line y=m·x+b to data with least squares regression.
- LinRegtIntervalsComputes confidence intervals for a linear regression, for the slope or for a predicted response.
- LinRegtTestPerforms a t test on the slope of a linear regression and the correlation of the data.
- LnRegFits a logarithmic model y=a+b·ln(x) to data with least squares regression.
- LogisticFits a logistic growth model y=c/(1+a·ℯ^(−b·x)) to data.
- LogisticDFits a logistic model with an added constant d to data.
- mean(Returns the arithmetic mean of the elements of a list.