Averages from frequency tables (AQA GCSE Statistics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does Σfx represent in the mean formula?
What does Σfx represent in the mean formula?
Sum of frequency times x-values
How do you find Σf in a frequency table?
How do you find Σf in a frequency table?
Add all frequency values
What is the first step in calculating the mean?
What is the first step in calculating the mean?
Create an fx column
If Σfx is 280 and Σf is 50, what is the mean?
If Σfx is 280 and Σf is 50, what is the mean?
5.6
What is a common mistake when calculating fx?
What is a common mistake when calculating fx?
Multiplying incorrectly
Why is it important to show the fx column?
Why is it important to show the fx column?
To clarify your working
What does the mean represent in data?
What does the mean represent in data?
Average of all values
What should you do if Σf isn't given?
What should you do if Σf isn't given?
Calculate it by adding frequencies
What is the mean of shoe sizes with Σfx 598 and Σf 20?
What is the mean of shoe sizes with Σfx 598 and Σf 20?
29.9
What does the symbol Σ mean?
What does the symbol Σ mean?
The sum of