Mr. Briggs's Class Likes Math

Alignments to Content Standards: 7.SP.A.1

It is unlikely that Mr. Briggs’s math class is a representative of all students at the school. For example, Mr. Briggs may be a particularly good (or entertaining) teacher, or he may pass out candy every day, or this class might be an advanced elective. Perhaps the students responded positively in hopes of pleasing their teacher. A better way to gather data would be to take a random sample of 25 students from all students at the school, so that it would be more representative of the population of interest. Among other options, this could be done by assigning a random number to every student from 1 to $N$, where $N$ is the number of students at the school. Then a random digits table or a calculator could be used to select 25 random numbers between 1 to $N$ for the sample.