EXAMPLE 2.35
The joint distribution. For the calcium requirement example, the joint distribution of age “met requirement” and age is
| Joint distribution of “met requirement” and age | ||
|---|---|---|
| Age (years) | ||
| Met requirement | 5 to 10 | 11 to 13 |
| No | 0.0956 | 0.2745 |
| Yes | 0.4243 | 0.2055 |
Because this is a distribution, the sum of the proportions should be 1. For this example the sum is 0.9999. The difference is due to roundoff error.