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7th grade · Math · Unit 16 of 22

Mean, Median & Mode

What is typical?

What your child practices

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

Texas Essential Knowledge and Skills (TEKS) teks student expectation: 7.12(A) · comparing two groups of data by their centers and spreads

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 Texas

In the Texas Essential Knowledge and Skills (TEKS), this is unit 16 of 22 in 7th grade Math, after Circle Graphs and before Linear Relations.

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: Texas Education Agency (TEA)

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 18, 16, 10, 20, 16?

    • 15
    • 10
    • 16

  2. Question 2

    What is the median of 3, 20, 10, 10, 10, 9?

    • 4
    • 10
    • 8

  3. Question 3

    Which value is an outlier in 20, 12, 13, 21, 15, 126?

    • 13
    • 12
    • 15
    • 126

  4. Question 4

    What is the mode of 9, 16, 10, 10, 2, 7?

    • 10
    • 14
    • 5

  5. Question 5

    What is the mean of 14, 11, 4, 14, 12?

    • 5
    • 6
    • 11

  6. Question 6

    What is the median of 20, 5, 14, 7, 7, 6?

    • 3
    • 1
    • 7

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