CASCALC89 COMMAND · NOT ON THE TI-89
tTest_2Samp
Performs a two sample t test on the difference of two population means. The results are stored in stat variables such as stat.t.
Syntax
tTest_2Samp List1,List2[,Freq1[,Freq2[,Hypoth[,Pooled]]]]
- Group
- Statistics
- Arguments
- Takes two data lists with optional frequencies, hypothesis and pooled flag, or the 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 |
|---|---|
| tTest_2Samp 5,2,8,4,2,8,0,1:stat.t | 1.0 |
Typing tTest_2Samp 5,2,8,4,2,8,0,1:stat.t on the home screen and pressing ENTER returns 1.0.
Related commands
- TwoVarComputes two variable statistics of paired data, such as means, sums and the correlation.
- varPop(Returns the population variance of a list.
- varSamp(Returns the sample variance of a list.
- zIntervalComputes a z confidence interval for a population mean when σ is known.
- zInterval_1PropComputes a z confidence interval for a population proportion.
- zInterval_2PropComputes a z confidence interval for the difference of two proportions.
- zInterval_2SampComputes a z confidence interval for the difference of two population means with known σ.
- zTestPerforms a one sample z test on a population mean when σ is known.