Calculating a hypergeometric problem on my calculator?

Question

TI 84 calculator. I don’t want this method: http://www.stat.luc.edu/StatisticsForTheSciences/P…That’s much more difficult than the method I had before, I just can’t seem to find the one I used before.

Mr. Toni Zulauf Sr. · Accepted Answer

geometpdf( and geometcdf( will give you probabilities based on a geometric distribution, not a hypergeometric distribution. In fact, the calculator has no built-in command for hypergeometric distributions.You’ll just simply have to use [Math] > Prb > 3:nCr to manually plug into the hypergeometric formula. (Or alternatively, create a program which does this for you, but you’ve already stated you don’t want to do that.)Example: Find P(1) when N = 12, n = 4, and k = 3Since P(x) = {C(k, x) × C(N − k, n − x)} ÷ C(N, n)With substitution, P(1) = {C(3, 1) × C(12 − 3, 4 − 1)} ÷ C(12, 4)So the values should be entered using the following steps:• Input [(] [(] [3]• Press [MATH], then press the right arrow key 3 times to select the PRB menu • Press [3] to select 3:nCr• Input [1] [)] [(] [9]• Press [MATH], then press the right arrow key 3 times to select the PRB menu• Press [3] to select 3:nCr• Input [3] [)] [)] [÷] [1] [2]• Press [MATH], then press the right arrow key 3 times to select the PRB menu• Press [3] to select 3:nCr• Input [4], then press [ENTER]The answer of .5090909091 should be displayed.

Mr. Toni Zulauf Sr. · Answer

Hypergeometric Calculator

Sigrid O'Kon

Calculating a hypergeometric problem on my calculator?

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