Mean (AQA GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How do you find the midpoint of an interval?
How do you find the midpoint of an interval?
Add boundaries and divide by 2
What does the symbol x̄ represent?
What does the symbol x̄ represent?
The mean of grouped data
What is the formula for the mean?
What is the formula for the mean?
Mean = ∑fx / ∑f
Why is the mean from grouped data an estimate?
Why is the mean from grouped data an estimate?
Only midpoints are used
If the interval is 20 < T ≤ 30, what is the midpoint?
If the interval is 20 < T ≤ 30, what is the midpoint?
25
What is the first step in calculating the mean?
What is the first step in calculating the mean?
Calculate midpoints
What is ∑fx in the mean formula?
What is ∑fx in the mean formula?
Sum of frequency times midpoint
How should you present your calculations?
How should you present your calculations?
In a clear table format
What is the total frequency if f = 12, 8, 3, 2?
What is the total frequency if f = 12, 8, 3, 2?
25
What should you remember about units?
What should you remember about units?
Always include appropriate units