Samples and populations
7th grade (Year 8 in England) · 16 questions · Common Core: 7.SP.A.1, 7.SP.A.2 · England: KS3 Statistics, GCSE Foundation Statistics
Name
Date
Score/ 16
Question 1
In a random sample of 25 students, 9 said they walk to school. There are 800 students in the school. Estimate how many walk to school.
Answer
Question 2
A survey is planned by asking only the members of the football team about favourite sports. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 3
In a random sample of 40 students, 35 said they walk to school. There are 1440 students in the school. Estimate how many walk to school.
Answer
Question 4
A survey is planned by asking people leaving a gym how often they exercise. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 5
In a random sample of 25 students, 6 said they walk to school. There are 625 students in the school. Estimate how many walk to school.
Answer
Question 6
A survey is planned by picking names out of a hat containing every student's name. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 7
In a random sample of 25 students, 7 said they walk to school. There are 825 students in the school. Estimate how many walk to school.
Answer
Question 8
A survey is planned by asking only the members of the football team about favourite sports. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 9
In a random sample of 40 students, 37 said they walk to school. There are 1080 students in the school. Estimate how many walk to school.
Answer
Question 10
A survey is planned by asking people leaving a gym how often they exercise. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 11
In a random sample of 40 students, 17 said they walk to school. There are 440 students in the school. Estimate how many walk to school.
Answer
Question 12
A survey is planned by asking only the members of the football team about favourite sports. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 13
In a random sample of 50 students, 45 said they walk to school. There are 850 students in the school. Estimate how many walk to school.
Answer
Question 14
A survey is planned by asking only the members of the football team about favourite sports. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
Question 15
In a random sample of 20 students, 17 said they walk to school. There are 700 students in the school. Estimate how many walk to school.
Answer
Question 16
A survey is planned by asking people leaving a gym how often they exercise. Is this likely to give a fair (unbiased) sample?
- A. Yes
- B. No, it is biased
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