A symmetric table that is used in correspondence analysis. It shows the frequencies for all combinations of categories of pairs of variables in a data set. As an example, the Burt table shown displays simultaneous information on the occurrence of category combinations for the variables Age, Health, and Class.
| | age | health | class |
---|
| | young | old | ill | well | middle | working |
---|
age | young | 64 | 0 | 9 | 55 | 47 | 17 |
| old | 0 | 36 | 17 | 19 | 21 | 15 |
health | ill | 9 | 17 | 26 | 0 | 7 | 19 |
| well | 55 | 19 | 0 | 74 | 61 | 13 |
class | middle | 47 | 21 | 7 | 61 | 68 | 0 |
| working | 17 | 15 | 19 | 13 | 0 | 32 |