Tom wants to know the average number of musical instruments students in his school play. He used the school's two band classes, consisting of a total of 48 students in his school play an average of three musical instruments. Is his conclusion valid?
1 answer
No, Tom's conclusion is not valid. In order to find the average number of musical instruments students in his school play, he would need to survey a representative sample of students from the entire school, not just those in the two band classes. The students in the band classes may not be representative of the entire student body in terms of musical instrument proficiency.