Chi | http www medcalc be manual chi square table php
Command:TestsChi-squaredtestDescriptionAllowstotestthestatisticalsignificanceofdifferencesinaclassificationsystem(one-wayclassification)ortherelationshipbetweentwoclassificationsystems(two-wayclassification).ToperformthisChi-squaredtest,youmustalreadyhavethedataclassifiedinafrequencytable(thistestisnotperformedontherawdata).Afrequencytableshowsthenumberofcasesthatbelongsimultaneouslytotwoormoredistinctcategories,e.g.patientscross-classifiedaccordingtobothgenderandagegroup.RequiredinputThedat...
Command:TestsChi-squared testDescriptionAllows to test the statistical significance of differences in a classification system (one-way classification) or the relationship between two classification systems (two-way classification).
To perform this Chi-squared test, you must already have the data classified in a frequency table (this test is not performed on the raw data).
A frequency table shows the number of cases that belong simultaneously to two or more distinct categories, e.g. patients cross-classified according to both gender and age group.
Required inputThe data of the contingence table have to be entered in the table in the dialog form. Either a one-way classification can be used (occupying one single row or one single column), or a two-way classification table up to a 6 x 9 table.
Optionally, you can select a Chi-squared test for trend. The Cochran-Armitage test for trend (Cochran, 1954; Armitage, 1955) provides a more powerful test than the ...