Reaction times and a revised mean

Reaction times and a revised mean

Secondary 2
TGM Original Questions

The stem-and-leaf diagram shows reaction times in seconds. Find

  1. the median,
  2. the mode. Two further times with total 70 seconds are added. Find
  3. the new mean.

Solution:

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Answer:(a) \(27\) s; (b) \(31\) s; (c) \(26.7\) s.

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