January 2017
Beginner
882 pages
203h 41m
English
| Population: | HR directors at fortune 500 companies |
| Parameter: | Proportion who find that surveys intrude on workdays |
| Sampling frame: | List of HR directors known to business magazine |
| Sample size: | 115 |
| Sample design: | Voluntary response |
| Other issues: | Presumably, those who find surveys intrusive lack time to reply. |
| Population: | Production of the snack foods manufacturer |
| Parameter: | Mean weight of bags |
| Sampling frame: | All cartons produced daily |
| Sample size: | 10 cartons × 2 bags each |
| Sample design: | A cluster sample. Cartons are a simple random sample of the production; the two bags sampled within the cartons (also a stratified sample period) |
| Other issues: | How are the bags chosen from a carton? |