Question 3 of 10 • Concepts in Probability and Statistics - MA3120 IC
A middle school contains sixth, seventh, and eighth graders. Each grade level contains approximately the same number of students. The principal wants to find the answer to a survey question affecting each student in the school. He asks a sample group “What time do you get up in the morning?” Which of these characteristics define the best sample?
Answer
A
one student chosen at random from each grade level
B
an equal number of students chosen at random from each grade level
C
the first 10 students from each grade level to arrive at school in the morning