5
QuizMultiple Choice
Data Displays and Statistics
Question 5 • TX-College Prep Math B
Dylan wanted to find the average number of hours per day that the students in his class practiced their instruments. He chose three students by drawing their names from a hat. What should he do to ensure that he has an accurate average for the class?
Answer
A
He should add the three numbers and divide by 3 because that is how one finds an average.B
He should poll more students to eliminate the variability caused by a sample size that is too small.C
He should take the middle number as his average since he has three observations.D
He should just find the average of 0.5 and 4 since 0 does not change anything when adding.