Sampling (Edexcel GCSE Maths): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is a population in statistics?
What is a population in statistics?
Complete group to be studied
What is a sample in statistics?
What is a sample in statistics?
A smaller group from the population
Which is NOT an advantage of sampling?
Which is NOT an advantage of sampling?
It guarantees no bias
What is a random sample?
What is a random sample?
Every member has equal selection chance
Which method can be used to select a random sample?
Which method can be used to select a random sample?
Assign numbers, use random generator
What does bias in sampling mean?
What does bias in sampling mean?
Sample doesn't represent population
Which is a common cause of bias?
Which is a common cause of bias?
Sample size is too small
How can you reduce bias in a sample?
How can you reduce bias in a sample?
Use a larger sample size
If 5 students watch TV for 15, 6, 22, 11, 18 hours, what is the mean?
If 5 students watch TV for 15, 6, 22, 11, 18 hours, what is the mean?
hours
Why is a sample of 5 students not very reliable for a whole school?
Why is a sample of 5 students not very reliable for a whole school?
The sample size is too small
What do we use sample data to make about the population?
What do we use sample data to make about the population?
Estimates