Averages and range (Edexcel GCSE Maths): Quizzes

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Averages and range
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11 questions from this quiz

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What is the mean of these numbers: 3,7,8,6,113, 7, 8, 6, 11?

77

Which formula calculates the mean?

rac{ ext{Sum of values}}{ ext{Count}}

Should you round the mean unless asked?

No, don't round unless asked

What is the median?

The middle value when ordered

What must you do first before finding the median?

Put the values in order

Find the median of: 5,2,8,35, 2, 8, 3

44

What is the mode of: 6,3,6,9,3,6,26, 3, 6, 9, 3, 6, 2?

66

When does a data set have no mode?

When all values appear equally often

What is the range of: 4,9,2,7,54, 9, 2, 7, 5?

77

Three cards show 8,8,8, 8, and ?? The mean is 77. Find the missing value.

55

Why is the median useful when data has extreme values?

It isn't affected by outliers

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