School hours

This task is about identifying the best sample for a survey.
The principal of a college with 500 students may lengthen the school day to 4 p.m.
He asks Blair to survey 50 students to find out student opinion. Blair suggests several possible samples that could be used.
For each suggestion, circle if it would be a fair sample or not, and explain your answer.

Question

a)  Sample 1: The first 50 students to arrive at school in the morning.
 
     i) Would this be a fair sample? (Select one)

    • Yes

    • No

ii) Explain your answer to i).

Question

b)  Sample 2: All the students in the computer room.
 
     i) Would this be a fair sample? (Select one)
 

    • Yes

    • No

ii) Explain your answer to i).

Question

c)  Sample 3 : Every 10th person on the school roll.

     i) Would this be a fair sample? (Select one)

    • Yes

    • No

ii) Explain your answer to i).