Question: A student wants to determine whether students at her school get enough sleep. she surveys 10 friends and calculates the average hours of sleep. what is a key flaw in her method?
A) The data was not recorded on a weekend
B) The sample is too small and not representative
C) She used a calculator to find the mean
D) Sleep hours are not measurable
Correct answer: B
Grade: 6 | Topic: Statistics and Probability | Difficulty: Hard | Standard: 6.SP.A.1