Averages from frequency tables (Edexcel 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 is the formula to calculate the mean from a frequency table?
What is the formula to calculate the mean from a frequency table?
Σfx/Σf
To find the mean, what is the first step you should take?
To find the mean, what is the first step you should take?
Add f×x column
Why is adding the f×x column important in the method?
Why is adding the f×x column important in the method?
It helps organize data and calculations
What does Σf represent in the mean formula?
What does Σf represent in the mean formula?
Sum of the frequencies
If the total of f×x is 600 and Σf is 20, what is the mean?
If the total of f×x is 600 and Σf is 20, what is the mean?
30
What is the mistake in calculating with zero frequency?
What is the mistake in calculating with zero frequency?
Dividing by zero
What does the mean represent in a dataset?
What does the mean represent in a dataset?
Average value considering frequencies
Why must you check the total frequency before calculating mean?
Why must you check the total frequency before calculating mean?
To avoid division by zero
In the example, what was the shoe size mean?
In the example, what was the shoe size mean?
29.9
What mistake is common when multiplying by the frequency?
What mistake is common when multiplying by the frequency?
Multiplying incorrectly