Steps |
Key Sequence |
Screens |
1. Set up Stats Tests |
STAT |
![](GIFs/ci1.jpg) |
|
twice |
![](GIFs/ci2.jpg) |
|
0 (for 2–SampTInt...) |
![](GIFs/2stci1.jpg) |
2. Select Stats for Input |
once (if necessary), then ENTER |
![](GIFs/2stci2.jpg) |
3. Input mean of SAMPLE |
once, enter mean of SAMPLE1, then ENTER |
![](GIFs/2stci3.jpg) |
4. Input standard deviation |
enter standard devation of SAMPLE1, then ENTER |
![](GIFs/2stci4.jpg) |
5. Input sample size |
enter sample size of SAMPLE1, then ENTER |
![](GIFs/2stci5.jpg) |
6. Input mean of SAMPLE |
enter mean of SAMPLE2, then ENTER |
![](GIFs/2stci6.jpg) |
7. Input standard deviation |
enter standard devation of SAMPLE2, then ENTER |
![](GIFs/2stci7.jpg) |
8. Input sample size |
enter sample size of SAMPLE2, then ENTER |
![](GIFs/2stci8.jpg) |
9. Input confidence level |
enter confidence level (AS DECIMAL), then ENTER |
![](GIFs/2stci9.jpg) |
10. Enter no for Pooled |
press ENTER on No |
![](GIFs/2stci9.jpg) |
11. Calculate CI |
once, ENTER |
![](GIFs/2stci10.jpg) |
12. Scroll down to find more calculations |
Press ![](GIFs/dArrow.jpg) |
![](GIFs/2stci11.jpg) |
In this case the 95% CI is –12.28 to 27.083. |