Questionnaires and interviews (Edexcel GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main purpose of a pilot survey?
What is the main purpose of a pilot survey?
To test questions on a small group
Why use the random response method?
Why use the random response method?
To protect privacy in sensitive topics
In the random response example, what is the estimated proportion with broken items?
In the random response example, what is the estimated proportion with broken items?
37.6%
What random event is used in the example about pretending to be someone else?
What random event is used in the example about pretending to be someone else?
Flipping a coin
Why does the random response method require larger samples?
Why does the random response method require larger samples?
Because responses include randomness
How do you calculate truthful responses from total responses?
How do you calculate truthful responses from total responses?
Subtract the random responses
In the example about breaking things, how is the proportion of truthfully broken items estimated?
In the example about breaking things, how is the proportion of truthfully broken items estimated?
Subtracting random responses from total
What is a crucial step in analyzing random response data?
What is a crucial step in analyzing random response data?
Subtract estimated random responses
Why are larger samples necessary in the random response method?
Why are larger samples necessary in the random response method?
To offset random data
In a dice random-response survey, 270 people ticked A of 900. Estimate % who truthfully ticked A.
In a dice random-response survey, 270 people ticked A of 900. Estimate % who truthfully ticked A.
16%