Statistical Bulletin Transport Series - Transport and Travel in Scotland 2011
Table 37: [Confidence limits] 95% confidence limits for estimates, based on SHS sub-samples sizes
| Sub-sample size (=100%) | Estimate | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5% or 95% |
10% or 90% |
15% or 85% |
20% or 80% |
25% or 75% |
30% or 70% |
35% or 65% |
40% or 60% |
45% or 55% |
50% | |
| percentage points ( + / - ) | ||||||||||
| 100 | 5.6% | 7.6% | 9.1% | 10.2% | 11.0% | 11.7% | 12.2% | 12.5% | 12.7% | 12.7% |
| 200 | 3.9% | 5.4% | 6.4% | 7.2% | 7.8% | 8.3% | 8.6% | 8.8% | 9.0% | 9.0% |
| 300 | 3.2% | 4.4% | 5.3% | 5.9% | 6.4% | 6.7% | 7.0% | 7.2% | 7.3% | 7.4% |
| 400 | 2.8% | 3.8% | 4.5% | 5.1% | 5.5% | 5.8% | 6.1% | 6.2% | 6.3% | 6.4% |
| 500 | 2.5% | 3.4% | 4.1% | 4.6% | 4.9% | 5.2% | 5.4% | 5.6% | 5.7% | 5.7% |
| 600 | 2.3% | 3.1% | 3.7% | 4.2% | 4.5% | 4.8% | 5.0% | 5.1% | 5.2% | 5.2% |
| 700 | 2.1% | 2.9% | 3.4% | 3.9% | 4.2% | 4.4% | 4.6% | 4.7% | 4.8% | 4.8% |
| 800 | 2.0% | 2.7% | 3.2% | 3.6% | 3.9% | 4.1% | 4.3% | 4.4% | 4.5% | 4.5% |
| 900 | 1.9% | 2.5% | 3.0% | 3.4% | 3.7% | 3.9% | 4.1% | 4.2% | 4.2% | 4.2% |
| 1,000 | 1.8% | 2.4% | 2.9% | 3.2% | 3.5% | 3.7% | 3.8% | 3.9% | 4.0% | 4.0% |
| 1,100 | 1.7% | 2.3% | 2.7% | 3.1% | 3.3% | 3.5% | 3.7% | 3.8% | 3.8% | 3.8% |
| 1,200 | 1.6% | 2.2% | 2.6% | 2.9% | 3.2% | 3.4% | 3.5% | 3.6% | 3.7% | 3.7% |
| 1,300 | 1.5% | 2.1% | 2.5% | 2.8% | 3.1% | 3.2% | 3.4% | 3.5% | 3.5% | 3.5% |
| 1,400 | 1.5% | 2.0% | 2.4% | 2.7% | 2.9% | 3.1% | 3.2% | 3.3% | 3.4% | 3.4% |
| 1,500 | 1.4% | 2.0% | 2.3% | 2.6% | 2.8% | 3.0% | 3.1% | 3.2% | 3.3% | 3.3% |
| 1,600 | 1.4% | 1.9% | 2.3% | 2.5% | 2.8% | 2.9% | 3.0% | 3.1% | 3.2% | 3.2% |
| 1,700 | 1.3% | 1.9% | 2.2% | 2.5% | 2.7% | 2.8% | 2.9% | 3.0% | 3.1% | 3.1% |
| 1,800 | 1.3% | 1.8% | 2.1% | 2.4% | 2.6% | 2.8% | 2.9% | 2.9% | 3.0% | 3.0% |
| 1,900 | 1.3% | 1.8% | 2.1% | 2.3% | 2.5% | 2.7% | 2.8% | 2.9% | 2.9% | 2.9% |
| 2,000 | 1.2% | 1.7% | 2.0% | 2.3% | 2.5% | 2.6% | 2.7% | 2.8% | 2.8% | 2.8% |
| 2,200 | 1.2% | 1.6% | 1.9% | 2.2% | 2.4% | 2.5% | 2.6% | 2.7% | 2.7% | 2.7% |
| 2,400 | 1.1% | 1.6% | 1.9% | 2.1% | 2.3% | 2.4% | 2.5% | 2.5% | 2.6% | 2.6% |
| 2,600 | 1.1% | 1.5% | 1.8% | 2.0% | 2.2% | 2.3% | 2.4% | 2.4% | 2.5% | 2.5% |
| 2,800 | 1.0% | 1.4% | 1.7% | 1.9% | 2.1% | 2.2% | 2.3% | 2.4% | 2.4% | 2.4% |
| 3,000 | 1.0% | 1.4% | 1.7% | 1.9% | 2.0% | 2.1% | 2.2% | 2.3% | 2.3% | 2.3% |
| 3,500 | 0.9% | 1.3% | 1.5% | 1.7% | 1.9% | 2.0% | 2.1% | 2.1% | 2.1% | 2.2% |
| 4,000 | 0.9% | 1.2% | 1.4% | 1.6% | 1.7% | 1.8% | 1.9% | 2.0% | 2.0% | 2.0% |
| 5,000 | 0.8% | 1.1% | 1.3% | 1.4% | 1.6% | 1.7% | 1.7% | 1.8% | 1.8% | 1.8% |
| 6,000 | 0.7% | 1.0% | 1.2% | 1.3% | 1.4% | 1.5% | 1.6% | 1.6% | 1.6% | 1.6% |
| 7,000 | 0.7% | 0.9% | 1.1% | 1.2% | 1.3% | 1.4% | 1.5% | 1.5% | 1.5% | 1.5% |
| 8,000 | 0.6% | 0.9% | 1.0% | 1.1% | 1.2% | 1.3% | 1.4% | 1.4% | 1.4% | 1.4% |
| 9,000 | 0.6% | 0.8% | 1.0% | 1.1% | 1.2% | 1.2% | 1.3% | 1.3% | 1.3% | 1.3% |
| 10,000 | 0.6% | 0.8% | 0.9% | 1.0% | 1.1% | 1.2% | 1.2% | 1.2% | 1.3% | 1.3% |
| 11,000 | 0.5% | 0.7% | 0.9% | 1.0% | 1.1% | 1.1% | 1.2% | 1.2% | 1.2% | 1.2% |
| 12,000 | 0.5% | 0.7% | 0.8% | 0.9% | 1.0% | 1.1% | 1.1% | 1.1% | 1.2% | 1.2% |
| 13,000 | 0.5% | 0.7% | 0.8% | 0.9% | 1.0% | 1.0% | 1.1% | 1.1% | 1.1% | 1.1% |
| 15,000 | 0.5% | 0.6% | 0.7% | 0.8% | 0.9% | 1.0% | 1.0% | 1.0% | 1.0% | 1.0% |
| 16,000 | 0.4% | 0.6% | 0.7% | 0.8% | 0.9% | 0.9% | 1.0% | 1.0% | 1.0% | 1.0% |
| 18,000 | 0.4% | 0.6% | 0.7% | 0.8% | 0.8% | 0.9% | 0.9% | 0.9% | 0.9% | 0.9% |
| 20,000 | 0.4% | 0.5% | 0.6% | 0.7% | 0.8% | 0.8% | 0.9% | 0.9% | 0.9% | 0.9% |
| 25,000 | 0.4% | 0.5% | 0.6% | 0.6% | 0.7% | 0.7% | 0.8% | 0.8% | 0.8% | 0.8% |
| 30,000 | 0.3% | 0.4% | 0.5% | 0.6% | 0.6% | 0.7% | 0.7% | 0.7% | 0.7% | 0.7% |
| 35,000 | 0.3% | 0.4% | 0.5% | 0.5% | 0.6% | 0.6% | 0.6% | 0.7% | 0.7% | 0.7% |
| 40,000 | 0.3% | 0.4% | 0.5% | 0.5% | 0.6% | 0.6% | 0.6% | 0.6% | 0.6% | 0.6% |
| 45,000 | 0.3% | 0.4% | 0.4% | 0.5% | 0.5% | 0.6% | 0.6% | 0.6% | 0.6% | 0.6% |
| 50,000 | 0.2% | 0.3% | 0.4% | 0.5% | 0.5% | 0.5% | 0.5% | 0.6% | 0.6% | 0.6% |
e.g. an estimate of 55% that is based on a sample of 800 has 95% confidence limits of 55% ± 4.5% points