Tammy conducted a survey to find the favorite subject of the students at her school. She asked 25 students from her math class what their favorite subject is. Tammy concludes that math is the favorite subject of the students at her school because 60% of the students in her class like math. Use at least two sentences to explain why Tammy's sample may not be valid. Make sure to use facts to support your answer.
3 answers
Tammy's sample may not be valid because she only surveyed students from her math class, which does not represent the entire student population at her school. Additionally, the fact that 60% of the students surveyed from her math class like math does not necessarily mean that math is the favorite subject of all students at the school.
do that again but in short
Tammy's sample may not be valid because she only surveyed students from her math class, which is not representative of the entire student population at her school. The opinion of 25 students from one class may not reflect the preferences of the entire school.