![]() ![]() ![]() 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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