1. The population is divided into strata and a random sample is taken from each stratum
   - stratified sample, representative sample

Derived forms: proportional samples

Type of: sample, sample distribution, sampling

• contrarily
• contrariness
• contrarious
• contrariwise
• contrary
• contrary to fact
• Contras
• contrast
• contrast material
• contrast medium
• contrasting
• contrastingly
• contrastive
• contrasty
• contravene
• contravention
• contredanse
• contretemps
• contribute
• contributing
• contribution
• contributive
• contributor
• contributory
• contributory negligence