Texas Instruments TI-84 PLUS SILV Guidebook - Page 240
name at the, Test, enter the observed counts in a matrix. Enter that matrix variable
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c2-Test c2-Test (chi-square test; item C) computes a chi-square test for association on the two-way table of counts in the specified Observed matrix. The null hypothesis H0 for a two-way table is: no association exists between row variables and column variables. The alternative hypothesis is: the variables are related. Before computing a c2-Test, enter the observed counts in a matrix. Enter that matrix variable name at the Observed: prompt in the c2.Test editor; default=[A]. At the Expected: prompt, enter the matrix variable name to which you want the computed expected counts to be stored; default=[B]. Matrix editor: Note: Press y ú ~ ~ 1 to select 1:[A] from the MATRX EDIT menu. Input: Calculated results: Note: Press y to display matrix [B]. Drawn results: Chapter 13: Inferential Statistics and Distributions 233