Measures of dispersion for grouped data (AQA GCSE Statistics): Quizzes

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Deciles and percentiles
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10 questions from this quiz

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What is the formula for the 4th decile?

4/10 * n

What is the purpose of deciles in statistics?

Divide data into 10 parts

What does the 36th percentile represent?

36% of data below it

What is the position formula for percentiles?

p/100 * n

What is the interpercentile range?

Higher - Lower percentile

How do you find the 20th percentile position?

20/100 * n

What is the maximum decile number?

9

What is the first step to find a decile?

Calculate the position

What does a cumulative frequency diagram show?

Data distribution

What is the 80th percentile position for a dataset of size n=150?

120

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