5 terms

Simple random samples

Each students name is written on a piece of paper. The names are placed in a bowl, and names are picked without looking

Stratified Random sample

Students are picked at random from each grade level at school.

Systematic Random sample

From alphabetical list of all students attending a school, every 20th person is chosen.

Convenience Sample

To represent all the students attending a school, the principal surveys the students in one math class.

Voluntary Response Sample

Students at a school who wish to express their opinion are asked to the office after school.