Reading a social-media dot plot

Reading a social-media dot plot

Secondary 2
5 marks
TGM Original Questions

For the probability calculation, each student in the stated group is equally likely to be selected.

The dot plot shows the daily social-media hours for 25 students.

  1. Find the modal number of hours.[1]
  2. Find the mean number of hours.[2]
  3. Find the probability that a selected student recorded zero hours.[2]

Solution:

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Answer:(a) \(4\) h (b) \(3.12\) h (c) \(\frac{3}{25}\).

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