Page 49 - NUMINO_WB_6B
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191-P3-1
Perfect Samples
Ricky, Kate, and Ryan each came up with a sample to conduct a survey
to find students’ approval rate of the school president. Which sample is
the most unbiased sampling and what is the approval rate of that sample?
Sampling Approval Rate
Ricky asked 50 40%
students in a dance 80%
club.
Kate randomly asked
50 4th grade students.
Ryan randomly asked 70%
50 students.
Step 1. Choose the student with a biased sampling. Explain your reasons.
Step 2. What is the approval rate of unbiased sampling?
Perfect Samples
Ricky, Kate, and Ryan each came up with a sample to conduct a survey
to find students’ approval rate of the school president. Which sample is
the most unbiased sampling and what is the approval rate of that sample?
Sampling Approval Rate
Ricky asked 50 40%
students in a dance 80%
club.
Kate randomly asked
50 4th grade students.
Ryan randomly asked 70%
50 students.
Step 1. Choose the student with a biased sampling. Explain your reasons.
Step 2. What is the approval rate of unbiased sampling?
