Which of the following is the best method for obtaining a representative sample from a particular...
Which of the following is the best method for obtaining a representative sample from a particular college?
1. recruiting all students from Missouri
2. selecting students who are working full time
3. picking every student whose last name start with C
4. using student ID to randomly select a student
Homework Answers
Ans: 4. using student ID to randomly select a student
In a representative sample, all students should have equal probability of getting selected. Among the 4 cases given, only in case 4, all students have equal chance of getting selected.
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