49 students are selected at random from sophomore class 39 from the junior class and 48 from senior class what type of sampling is used simple random, stratified, systematic, convenience

Question

Mathematics

Zander Pierce

6 April, 15:28

49 students are selected at random from sophomore class 39 from the junior class and 48 from senior class what type of sampling is used simple random, stratified, systematic, convenience

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Kristian Preston · Answer 1

(B) Stratified

Step-by-step explanation:

Stratified sampling refers to a sampling method in which the entire population is first divided into groups/strata before a random sample is taken from each strata.

The school population in this case has been divided into these strata,

Sophomore class Junior class; and Senior class

From these classes, a random sample of 49,39 and 48 students respectively was then taken,