CASCALC89 COMMAND · NOT ON THE TI-89
zTest_2Samp
Performs a two sample z test on the difference of two population means with known σ. The results are stored in stat variables such as stat.z.
Syntax
zTest_2Samp σ1,σ2,List1,List2[,Freq1[,Freq2[,Hypoth]]]
- Group
- Statistics
- Arguments
- Takes σ1, σ2 and two data lists with optional frequencies and hypothesis, 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 |
|---|---|
| zTest_2Samp 2,2,5,8,4,8,1:stat.z | 1.0 |
Typing zTest_2Samp 2,2,5,8,4,8,1:stat.z on the home screen and pressing ENTER returns 1.0.
Related commands
- χ²2wayPerforms a χ² test for association on a two way table of observed counts; it is the same command as chi22way.
- χ²GOFPerforms a χ² goodness of fit test that compares observed counts with expected counts; it is the same command as chi2GOF.
- ANOVAPerforms a one way analysis of variance to compare the means of several groups.
- ANOVA2wayPerforms a two way analysis of variance on several lists of data.
- chi22wayPerforms a χ² test for association on a two way table of observed counts.
- chi2GOFPerforms a χ² goodness of fit test that compares observed counts with expected counts.
- CubicRegFits a cubic polynomial y=a·x^3+b·x^2+c·x+d to data with least squares regression.
- ExpRegFits an exponential model y=a·b^x to data with least squares regression.