Averages and Spread (Edexcel GCSE Maths): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What do measures of spread tell you about a dataset?
What do measures of spread tell you about a dataset?
How data is distributed around the centre
Why is the interquartile range often more useful than the range?
Why is the interquartile range often more useful than the range?
It's not affected by extreme values
How many equal groups do quartiles divide your data into?
How many equal groups do quartiles divide your data into?
Four
What percentage of data points does each quartile group contain?
What percentage of data points does each quartile group contain?
25%
What does the lower quartile () represent?
What does the lower quartile () represent?
25% of the way through ordered data
What does the upper quartile () represent?
What does the upper quartile () represent?
75% of the way through ordered data
What must you do before calculating quartiles?
What must you do before calculating quartiles?
Arrange data in ascending order
What is the formula for the position of ?
What is the formula for the position of ?
What is the formula for the position of ?
What is the formula for the position of ?
How do you calculate the interquartile range?
How do you calculate the interquartile range?
What does the interquartile range tell you about?
What does the interquartile range tell you about?
Spread of the middle 50% of data
What do the quartile position formulas give you?
What do the quartile position formulas give you?
The position, not the value