Casio FX-9860GII-L-IH User Guide - Page 328

6-5-18 Tests k χ2 Test χ2 Test sets up a number of independent groups and tests hypothesis related to the proportion of the sample included in each group. The χ2 Test is applied to dichotomous variables (variable with two possible values, such as yes/no). Expected counts k Σ Σ xij × xij F = i=1 j =1 ij k Σ Σ xij i=1 j=1 Σ Σ χ2 = k i =1 (xij j =1 - Fij)2 Fij Perform the following key operations from the statistical data list. 3(TEST) 3(CHI) Next, specify the matrix that contains the data. The following shows the meaning of the above item. Observed name of matrix (A to Z) that contains observed counts (all cells positive integers) Expected name of matrix (A to Z) that is for saving expected frequency Save Res list for storage of calculation results (None or List 1 to 26) Execute executes a calculation or draws a graph # The matrix must be at least two lines by two columns. An error occurs if the matrix has only one line or one column. # Pressing 1(Mat) while the "Observed" and "Expected" parameter settings are highlighted will display the Matrix (A to Z) setting screen. # Pressing 2('MAT) while setting parameters enters the Matrix Editor, which you can use to edit and view the contents of matrices. 20050401