Psychology majors at the state college consist of 40% males and 60% females. The psychology department is conducting a survey of its majors and obtains a sample by randomly selecting students so there will 20 males and 30 females from the list of psychology majors. What kind of sampling is used in this example?

proportional stratified random sampling

Explanation:

Based on the information provided within the question it can be said that in this scenario the kind of sampling being used is called proportional stratified random sampling. This type of sampling is when the size of the sample is proportionate to the population size of the strata when compared to the entire population. Which in this case 20 males would be the same as 40% of the entire population while 30 females is proportionate to 60% of the entire population.

50 (sample size) * 0.40 = 20

50 (sample size) * 0.60 = 30

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