CASCALC89 COMMAND · NOT ON THE TI-89
tInterval_2Samp
Computes a t confidence interval for the difference of two population means. The results are stored in stat variables such as stat.ME.
Syntax
tInterval_2Samp List1,List2[,Freq1[,Freq2[,CLevel[,Pooled]]]]
- Group
- Statistics
- Arguments
- Takes two data lists with optional frequencies, confidence level 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 |
|---|---|
| tInterval_2Samp 5,2,8,4,2,8,0.95,1:stat.ME | 2.14478668792 |
Typing tInterval_2Samp 5,2,8,4,2,8,0.95,1:stat.ME on the home screen and pressing ENTER returns 2.14478668792.
Related commands
- tTestPerforms a one sample t test on a population mean when σ is unknown.
- tTest_2SampPerforms a two sample t test on the difference of two population means.
- 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.