Question

The Police department stops every 5th car at a DUI checkpoint.

Is this : Systematic sample, Stratified sample, or Convenience sample ?

Answer 1

Sol:

In systematic sampling,numbers each subject of the population and selecting evry kth subject.

suppose there were 3000 and we need 50 samples

so

3000/50=60

selectong every 60 th subject

In stratified sampling ,we divide the population into groups according to some characteristic

convenience sample sample of subjects used because they
are convenient and available

here evry 5th meber is selceted

it is systematic sampling,

ANSWER:

systematic sampling,