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S1.1 • Sec 1 MOE
Statistics

Mean, Median & Mode

Analyse data sets using measures of central tendency.

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Learning objectives

  • • Calculate mean, median, and mode
  • • Choose the best average for a data set
  • • Interpret results in context
Learning methods:CRAI-We-YouSpaced reviewRetrievalMetacognition

Brain warm-up (try before we teach)

Try first, then learn step by step

Find the median of: 3, 7, 2, 9, 5. (Order them first: 2, 3, 5, 7, 9)

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Foundation — I Do → We Do → You Do

1
I Do — Learn
Step 1 of 4

Three averages

  • Mean = sum of values ÷ number of values
  • Median = middle value (when ordered)
  • Mode = most frequent value
2
I Do — Learn
Step 2 of 4

Worked example: Mean

Test scores: 6, 8, 7, 9, 5

Mean = = 7

3
We Do — Guided
Step 3 of 4

Guided: Find the median

Find the median of: 3, 7, 2, 9, 5. (Order them first: 2, 3, 5, 7, 9)
4
You Do — Practice
Step 4 of 4

Practice: Find the mode

Find the mode of: 4, 6, 4, 8, 4, 6.