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Table A-4. Example of weighted percentage calculation
| A | B | C | D | |
|---|---|---|---|---|
| Disability category | Number in sample | Likelihood of responding "yes" to question "Can you find a friend when you need one?" |
Example weight for category | Weighted value for category |
| Learning disability | 1 | 79 | 5.5 | 434.5 |
| Speech/language impairment | 1 | 78 | 2.2 | 171.6 |
| Mental retardation | 1 | 71 | 1.1 | 78.1 |
| Emotional disturbance | 1 | 77 | 0.9 | 69.3 |
| Hearing impairment | 1 | 82 | 0.2 | 16.4 |
| Visual impairment | 1 | 80 | 0.1 | 8 |
| Orthopedic impairment | 1 | 79 | 0.1 | 7.9 |
| Other health impairment | 1 | 74 | 0.6 | 44.4 |
| Autism | 1 | 47 | 0.2 | 9.4 |
| Multiple disabilities | 1 | 79 | 0.1 | 7.9 |
| Total | 10 | 746 | 10 | 847.5 |
| Unweighted sample percentage = 74.6 (Column B total divided by Column A total) | Weighted population estimate = 84.8 (Column D total divided by Column C total) | |||