Income distribution with a high outlier

Income distribution with a high outlier

Secondary 2
5 marks
TGM Original Questions

The dot plot shows monthly incomes (dollars). Find

  1. the percentage earning at most \(\$5000\),[1]
  2. the minimum income of the top 20%,[1]
  3. the pie angle for \(\$7500\),[1]
  4. whether the mean is a suitable typical income.[2]

Solution:

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Answer:(a) \(50\%\). (b) \(\$10000\). (c) \(90^\circ\). (d) Use the median; the mean is affected by the high outlier.

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