-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hi,
I have a problem with the ChiSquareTest Method supplied by Apache Commons. I already postet it on StackOverflow, so I will just copy everything from there (https://stackoverflow.com/questions/34333243/apachecommons-weird-results-from-chisquaretest) I use the method chiSquareTest(double[] expected, long[] observed); But the values I get back don't make sense to me. So I tried numerous ChiSquare Online Calculators to find out what this function calculates. An example: Group 1: {25,25} Group 2: {30,20} (Taken from Wikipedia, German Chi Square Test article) P- values from: http://www.quantpsy.org/chisq/chisq.htm and http://vassarstats.net/newcs.html P = 0.3149 and 0.31490284 0.42154642 and 0.4201 (with and without Yates Correction) Apache Commons: 0.1489146731787664 Code: ChiSquareTest tester = new ChiSquareTest(); long[] b = {25,25}; double[] a = {30,20}; tester.chiSquareTest(a,b); Another thing I do not understand is the need to have a long and a double array. Why not two long arrays? Maybe one of you can help me understand the result. Thanks in advance. Michael -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJWc9MIAAoJEL6dFkylAyuLeY4QAInDSvdI0pU+9QC9xxKNpvWb OK1s32zcj+B8MkNCQQ+IrFg8nyJiaT9EMyTBC4xKDdB2fb8rVZyV6cwAjh1TOcNf vo+wqOTtMcPW92eXEHxaJkrknB3dbl/Jc8NQX3afF+rmEnf9I1qfQUfhwoyOm79G WjLqgm1PGi7SY4BwjBbHt8sUxPowLUHj6ZbSpRkVDT64rb1PSeo9tet/Mnzwk1Vo wML/IOayxQlLMjYgbXDeEmP3nQhx3qY1+zc6TmvDHI5fMEQRAz1hCvOO1MnwlNUU +hEoJrOmkz3nXyenq4fw9pqKQNZOUUwOghptkK/SQqki+qyeIlF2dTZHaGycEckM Lcot/twki2xxvF8Z0T4MLBSBJKBQ20MtvQrUBbgIa/msg9JeFVUYYyNbFVHm666/ xBJOo1pyeRGYl+q0/nMvbMUTHeY7oNB4v5JGS/8aQjWooSMdDp0INXcdEOiiw5Oo +7i5kHxZBvw1AwJ7cNmGFlRIOCV2W97Pv205+ziId70tNLYGvQH+OGRej2sZt911 CP5c7ZXRacHR5DeBMzxIIVOniulCEMHQxwXX0J86lxL3rVzNcwi6J+A2VLckewkC 20WH6o2ofPbAbTRZvJT91mbfnDhKIdosGhYDjlpY42dAnE/jAnA7MmuTem3iQzom FNmS9pIsGYyByDsBM9Xj =iM1r -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
