As someone who swears by TI-84, it’s incredibly intuitive and has lots of added features to make it more user friendly. I’ve dealt with many apps that have claimed to be this, or have tried to be this, but this is the first that actually feels like I’m using a graphing calculator. I’m a 3rd year mechanical engineering undergrad, and holy lord crap this is the greatest thing since Betty White. 2-sampleZtest Standard deviation 1: 4 Standard deviation 2: 5.1 X bar 1: 13.6 N1: 200 X bar 2: 11.6 N2: 11.6 Null hypothesis: not equal to mu - Expected answer: Z=4.36… P=1.28…* 10^-5 X bar 1 : 13.6 X bar 2: 11.6 N1: 200 N2: 200 - Received answer: It used to summarize the entered data but now appears the same p and z values are now presented. (It would merely summarize the data I entered and not provide the solution.) -2nd response: Here’s one but I won’t do one for all the tests I listed as they run on similar principals.
Basically any distribution with 2 samples or lists would not provide z score, p value, etc or necessary test statistic/parameters. response to developer: The errors I found were in the statistics tests under “STAT -> TESTS”: 3,4,6,9,0,B,and E. however for the majority of your functions, you can’t get a better calculator. However I have found some bugs when it come to running some of the statistic test such as 2propztests etc. This calculator is a great way to avoid spending $120-$200 on a Ti84 calculator.
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