Evaluating Modal, Median, and Mean Values in Discrete Distributions

Evaluating Modal, Median, and Mean Values in Discrete Distributions

Secondary 4

A class of students took a Mathematics test. Their scores are represented in the stem-and-leaf diagram as shown.

Find

  1. the modal score,
  2. the median score,
  3. the mean score,
  4. the standard deviation of the scores, correct to \(3\) significant figures.

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Answer:(a) 27 marks. (b) 27.5 marks. (c) 26.75. (d) 9.68 (3 s.f.).

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