Question

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

Answer 1

(B)Stratified

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,