Question

Li designed a survey to determine how comfortable students at her middle school are with fractions. There are 600 students in her middle school. The students are equally distributed among grade levels. She selected a sample of 28 students in her first-period class. Which best explains Li’s sample? random and biased random and unbiased nonrandom and biased nonrandom and unbiased.

Answer 1

unbiased nonrandom

Explanation:

Answer 2

unbiased nonrandom

Explanation:

By picking only people from 1st period they are not random.

They haven't said anything that would make these people biased.