MATH 120 STATISTICS ACTUAL TEST
PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ cluster sampling. Answer: Cluster sampling is used in statistics
when natural groups are present in a population. The whole
population is subdivided into clusters, or groups, and random
samples are then collected from each group. good for huge
population not accurate because can miss whole portions of
population
(sampling is like stratified sampling, but the idea is that entire groups
are selected as opposed to individuals.)
◉ stratified sampling. Answer: A type of probability sampling in
which the population is divided into groups with a common attribute
and a random sample is chosen within each group
◉ systematic sampling. Answer: Systematic sampling is a probability
sampling method where the elements are chosen from a target
population by selecting a random starting point and selecting other
members after a fixed 'sampling interval'. Sampling interval is
calculated by dividing the entire population size by the desired
sample size.
PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ cluster sampling. Answer: Cluster sampling is used in statistics
when natural groups are present in a population. The whole
population is subdivided into clusters, or groups, and random
samples are then collected from each group. good for huge
population not accurate because can miss whole portions of
population
(sampling is like stratified sampling, but the idea is that entire groups
are selected as opposed to individuals.)
◉ stratified sampling. Answer: A type of probability sampling in
which the population is divided into groups with a common attribute
and a random sample is chosen within each group
◉ systematic sampling. Answer: Systematic sampling is a probability
sampling method where the elements are chosen from a target
population by selecting a random starting point and selecting other
members after a fixed 'sampling interval'. Sampling interval is
calculated by dividing the entire population size by the desired
sample size.
