Lesson: Stratified Random Sampling Mathematics
In this lesson, we will learn how to take a stratified, or layered, random sample.
Which of the following is not true about stratified sampling?
Can a biased sample chosen from a given population be a stratified random sample?
In a certain survey about the colleges that some high-school students wish to join, a sample of 2,000 students was randomly selected out of a population of 40,000. Is that considered to be stratified sampling?