Answer: Stratified sampling
Step-by-step explanation:
Stratified sampling is a random sampling method in which the population is divided into non-coinciding groups are called strata and a sample is picked out by some design within each stratum.
Given: A researcher wants to survey people from different age groups to analyze voting patterns.
Thus he will make different groups according to different ages to analyze voting patterns that are called stratum.
Thus, Stratified sampling best accomplish this goal.
Answer:
the first one
Step-by-step explanation:
3/5 is bigger because 4/7 = 20/35 and 3/5 = 21/35
It presents students with questions based on their answers to previous questions
