📖 Math Dictionary

Median

/MEE-dee-un/

Definition

The median is the middle value when numbers are arranged in order. If there's an even count of numbers, the median is the average of the two middle values.

💡Example

For 3, 7, 9, 12, 15: The median is 9 (middle value). For 2, 4, 6, 8: The median is (4 + 6) ÷ 2 = 5 (average of two middle numbers).

🎓Used in Grades

Grades 6-12KS3 to GCSEÅrskurs 6-9

✏️Practice Checks

Find the median of 3, 7, 9, 12, and 15.

Answer: 9

The values are already ordered, and 9 is the middle value.

Find the median of 2, 4, 6, and 8.

Answer: 5

Average the two middle values: (4 + 6) / 2 = 5.

What must you do before finding a median?

Answer: Arrange the values in order.

The median depends on position, so sorting the data is essential.

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🔗Related Terms

Mean Mode

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statistics →mean median mode →data analysis →

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