Home › AP Statistics › Statistics › Sampling and Data › To choose a stratified sample you divide the pop…
To choose a stratified sample you divide the population into groups called strata and then take:
AA proportionate number from each
BOne whole stratum at random
CEvery nth item from a list
DWhoever is easiest to reach
Answer & Solution
Correct answer: A. A proportionate number from each
1. Stratified sampling guarantees each subgroup is represented.
2. To choose a stratified sample, divide the population into groups called strata.
3. Then take a proportionate number from each stratum.
4. Taking a whole group instead would be cluster sampling.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 1 'Sampling and Data', sections 1.1-1.4_
Related questions
When analysing data, the two kinds of error to watch for are nonsampling errors and:Random assignment of experimental units to treatment groups is used to control:A double-blind experiment is one in which the people kept unaware are:A placebo is best described as a treatment that is:A control group is set aside in an experiment specifically to counter:Additional variables that can cloud a study are called:In an experiment, the variable thought to cause the change is the:The ratio of how often a value occurs to the total number of outcomes is the: