Books read, subgroup means and a new median

Books read, subgroup means and a new median

Secondary 2
TGM Original Questions

Books read 0,1,2,3,4,5 have frequencies 8,6,5,10,6,5 for 40 pupils.

  1. Find the mode, mean and median.
  2. Eighteen boys have mean 2 books. Find the girls’ mean.
  3. Two more pupils each read \(x\) books, where \(0\le x\le5\). Find the greatest \(x\) for which the new median is 3.

Solution:

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Answer:(a) mode \(3\), mean \(2.375\), median \(3\); (b) \(59/22\approx2.68\); (c) \(x=5\).

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