Practice problem
Which of the following is not true about stratified sampling?
Each member of a population being studied must be identified.
Each member of a population must be placed into one and only one subgroup.
It can be used to ensure that each member of a population can be represented.
It is conducted by choosing every fifth person in a population.
All of the above are true about stratified sampling.
Type a concept, like “slope” or “photosynthesis”.