Handling data

There are 54 NRICH Mathematical resources connected to Handling data
Substitution Cipher
problem
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Substitution cipher

Age
11 to 14
Challenge level
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Find the frequency distribution for ordinary English, and use it to help you crack the code.
Very old man
problem
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Very old man

Age
16 to 18
Challenge level
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Is the age of this very old man statistically believable?
In the bag
problem
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In the bag

Age
11 to 14
Challenge level
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Can you guess the colours of the 10 marbles in the bag? Can you develop an effective strategy for reaching 1000 points in the least number of rounds?
Reaction timer
problem
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Reaction timer

Age
11 to 14
Challenge level
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This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.
m, m and m
problem
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M, m and m

Age
11 to 14
Challenge level
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If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?

Searching for mean(ing)
problem
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Searching for mean(ing)

Age
11 to 16
Challenge level
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If you have a large supply of 3kg and 8kg weights, how many of each would you need for the average (mean) of the weights to be 6kg?
For richer for poorer
problem
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For richer for poorer

Age
14 to 16
Challenge level
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Charlie has moved between countries and the average income of both has increased. How can this be so?
How would you score it?
problem
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How would you score it?

Age
11 to 14
Challenge level
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Invent a scoring system for a 'guess the weight' competition.
The hair colour game
problem
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The hair colour game

Age
7 to 11
Challenge level
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The class were playing a maths game using interlocking cubes. Can you help them record what happened?
A population survey
problem

A population survey

Age
14 to 18
Challenge level
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A geographical survey: answer the tiny questionnaire and then analyse all the collected responses...