Stratified sampling is used with a skewed population, and the researcher identifies ________ contained within the population based on their differences.

Stratified sampling is used with a skewed population, and the researcher identifies ________ contained within the population based on their differences.

Stratified sampling is used with a skewed population, and the researcher identifies ________ contained within the population based on their differences.









A) systems
B) samples
C) strata
D) persons
E) skews













Answer: C