11 Plus (11+) Maths Practice Test: Handling Data 2 (Difficult) — Flashcards | Eleven-Plus (11+) | FatSkills

11 Plus (11+) Maths Practice Test: Handling Data 2 (Difficult) — Flashcards

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Four things are associated with data handling: the range, the mean, the mode and the median. These four ideas are used to work out averages.

The range of a set of data is the difference between its highest and lowest values. The mean is worked out by adding all the values together, then dividing by the number of values. The mode is the value which appears most often. Finally, the median is the middle value of the data, if it is arranged from lowest to highest.

 

Related: 11 Plus (11+) Maths Practice Test: Handling Data (Difficult)

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Jane wanted to know how old the men in her family were when they began shaving. She asked 9 of them and got these results: 15, 16, 17, 18, 16, 15, 17, 19, 20.
What is the median of the given data?
17
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