February 27, 2025
Australia’s Most Trusted & Distrusted Brands + The Benchmark Recovery Rate Webinar
Finding No: 9820
Join Roy Morgan CEO Michele Levine to discover:
- Australia’s most Trusted and Distrusted brands – who’s winning and losing?
- How are Qantas, Woolworths & Coles performing?
- What's going wrong with the reputations of CBA, ABC and Bupa?
- 24 months after a crisis, 75% of brands have not recovered – how long does it take?
- Are Optus and Medibank above or below the benchmark recovery rate?
Margin of Error
The margin of error to be allowed for in any estimate depends mainly on the number of interviews on which it is based. Margin of error gives indications of the likely range within which estimates would be 95% likely to fall, expressed as the number of percentage points above or below the actual estimate. Allowance for design effects (such as stratification and weighting) should be made as appropriate.
| Sample Size | Percentage Estimate |
| 40% – 60% | 25% or 75% | 10% or 90% | 5% or 95% | |
| 1,000 | ±3.0 | ±2.7 | ±1.9 | ±1.3 |
| 5,000 | ±1.4 | ±1.2 | ±0.8 | ±0.6 |
| 7,500 | ±1.1 | ±1.0 | ±0.7 | ±0.5 |
| 10,000 | ±1.0 | ±0.9 | ±0.6 | ±0.4 |
| 20,000 | ±0.7 | ±0.6 | ±0.4 | ±0.3 |
| 50,000 | ±0.4 | ±0.4 | ±0.3 | ±0.2 |
