Making Sense of Data: A Practical Guide to Exploratory Data Analysis and Data Mining

A.3 CHI-SQUARE DISTRIBUTION

Critical values of χ² are shown in Table A.3 for various degrees of freedom (df) and illustrated in Figure A.3. The area or probability values (α) to the right of the χ² values are shown in the table. For example, with 9 degrees of freedom and 0.05 probability (α), the χ² value would be 16.919.

Figure A.3. Chi-square distribution

Table A.3. χ² distribution