Probability Sampling Techniques

Question 1

Simple random

Answer 1

Probability sample, population not widely spread

Question 2

Systematic random

Answer 2

kth

Sampling interval: k = N/n

Question 3

Stratified random

Answer 3

Non-overlapping strata (homogeneous), then simple random sampling

Proportion allocation:
n# = (n/N)*N#

Question 4

Cluster

Answer 4

Naturally occuring groups; heterogeneous within the cluster, homogeneous among clusters

Question 5

Multi-stage

Answer 5

Two or more steps of sampling