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7th grade · Math · Unit 12 of 17

Mean, Median & Mode

What is typical?

What your child practices

Mean, median, mode and range, and how an outlier changes them.

Alaska content standards learning standard: 7.SP.3; 7.SP.4 · comparing two data sets with measures of center and variability

How we explain it

Children can open this short lesson before they practice.

  1. Mean: add the values and divide by how many there are.
  2. Median: the middle value when the data is in order. Mode: the most common value.
  3. An outlier is a value far from the rest. It pulls the mean most.

Example: Find the median of 3, 9, 5, 7, 4. Put in order: 3, 4, 5, 7, 9. The middle value is 5. Answer: 5

Mean, Median & Mode in Alaska

In the Alaska content standards, this is unit 12 of 17 in 7th grade Math, after Dependent Events and before Multiply & Divide Signed Numbers.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Alaska Department of Education and Early Development

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    What is the mean of 15, 14, 20, 15, 6?

    • 14
    • 18
    • 4

  2. Question 2

    Which value is an outlier in 12, 10, 15, 21, 14, 126?

    • 14
    • 126
    • 12
    • 10

  3. Question 3

    What is the median of 18, 20, 12, 8, 10, 8?

    • 11
    • 17
    • 5

  4. Question 4

    What is the mode of 4, 7, 6, 16, 6, 2?

    • 6
    • 12
    • 4

  5. Question 5

    What is the range of 16, 23, 48, 19, 27?

    • 32
    • 31
    • 27

  6. Question 6

    What is the median of 17, 20, 17, 18, 11, 16?

    • 17
    • 19
    • 22

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