Combined Case 2015-2035
The Combined Case applies weights to the values in each case for variables Population, Life Expectancy, and global footprint Fe as follows:
Combined Value = Bestweight * Best + Worstweight * Worst + Projectedweight * Projected + Hybridweight * Hybrid + Limitlessweight * Limitless
Weights are assigned based on the area under a normal probability distribution divided into five standard deviations (each a category for one case):
| Category | Stndard Deviation Range (Z) | Weight |
| 1 | -6 to -3.6 | 0.000159109 |
| 2 | -3.6 to -1.2 | 0.114910562 |
| 3 | -1.2 to +1.2 | 0.76986066 |
| 4 | +1.2 to +3.6 | 0.114910562 |
| 5 | +3.6 to +6 | 0.000159108 |
The remaining variables are calculated based on their definitions:
F = Fe / Population
Femin = Population * Fmin
Remaining Femin = [Fetotal - (Fe + Femin)] / Femin
The following graph shows normalized values with:
| Case | Category |
| Best | 5 |
| Worst | 2 |
| Projected | 3 |
| Hybrid | 4 |
| Limitless | 1 |
