Answer
Question of Interest : How many students get a job after completion of Masters in University.
Two bad ways to collect sample for it:
1) 10 students from each Masters class and finding number of students who have gotten jobs out of these 10 students
Problem with the sample: 10 is not proportionate to the size of the class which can give skewed results
2) Sample Masters students at the canteen of the University
Problem with sample: Some Masters students who are from a school which is closer to the canteen are a more frequent visitor to the canteen so bias of these students of such school will be there in the result.
Work Step by Step
Question of Interest : How many students get a job after completion of Masters in University.
Two bad ways to collect sample for it:
1) 10 students from each Masters class and finding number of students who have gotten jobs out of these 10 students
Problem with the sample: 10 is not proportionate to the size of the class which can give skewed results
2) Sample Masters students at the canteen of the University
Problem with sample: Some Masters students who are from a school which is closer to the canteen are a more frequent visitor to the canteen so bias of these students of such school will be there in the result.
