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Year 7 maths · I.14 · Statistics

Frequency tables: find the median

List the values in order, using each as many times as its count says. Find the middle one.

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  1. A teacher asked each student how many books they read this month. Results: 0 books: 4 students; 1 book: 5 students; 2 books: 1 student; 3 books: 3 students. What is the median?

    Answer: 1

  2. A survey asked each family how many pets they have. Results: 1 pet: 2 families; 2 pets: 4 families; 3 pets: 2 families; 4 pets: 4 families. What is the median?

    Answer: 2.5

  3. A survey asked each family how many pets they have. Results: 2 pets: 2 families; 3 pets: 3 families; 4 pets: 5 families; 5 pets: 3 families. What is the median?

    Answer: 4

Tip: List the values in order, using each as many times as its count says. Find the middle one.

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