Question: A school of 1000 students wants to estimate the average number of hours students spend on homework per week. which method will likely produce the most accurate and unbiased estimate?
A) Ask the top 10 students with the highest GPA
B) Survey the first 50 students who arrive at school
C) Randomly select 100 students from all grade levels
D) Ask all students in one math class
Correct answer: C
Grade: 7 | Topic: Statistics and Probability | Difficulty: Medium | Standard: 7.SP.A.1