Diagnostics information: Chi-square test
When you run a statistical test on a table, UNICOM Intelligence Professional can create diagnostics information that shows the
p values and some of the intermediate figures used to calculate the statistics. The information is in comma-delimited format, so you can open it in Microsoft Excel and perform calculations on the data. The information varies according to the test. Here is the information for the
Example of the chi-square test.
Stats for table 'Table1' row 9 column 9
Using the Pearson test
The above example uses the Pearson test. formula
Displays the name of the formula used.
rows/cols
These indicate the category rows and columns that the test was performed on.
chisqd
The chi-square value.
chidof
The degrees of freedom.
pval
The p value.
Using the Yates correction
When the Yates' correction is used, the following columns are also present:
absterm
The absolute value of the product of one diagonal minus the product of the other diagonal. When the absterm value is less than the halfsum value, the Yates' value is not calculated and the chi-square value is set to zero.
halfsum
Half the sum of frequencies in all the cells.
fisher2
The two-tailed probability of chi-square as calculated by Fisher's exact test.
fisher1
The one-tailed probability of chi-square as calculated by Fisher's exact test.
See also
