Interpreting a height stem-and-leaf

Interpreting a height stem-and-leaf

Secondary 2
3 marks
TGM Original Questions

Give percentages correct to 3 significant figures where necessary.

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

The heights of 15 students are shown.

StemLeaf
\(12\)\(8\)
\(13\)\(2\) \(7\)
\(14\)\(1\) \(3\) \(5\) \(8\)
\(15\)\(0\) \(4\) \(6\) \(9\)
\(16\)\(2\) \(7\)
\(17\)\(3\) \(3\)

Key: \(12|8=128\) cm. Find

  1. the range,[1]
  2. the percentage below 145 cm,[1]
  3. the probability that a selected height is between 140 cm and 165 cm inclusive.[1]

Solution:

Solution locked

Sign in to view the step-by-step solution

Please join our E Math programme to search for similar questions for more practice.

E Math Tuition
Answer:(a) \(45\) cm (b) \(33.3\%\) (c) \(\frac{3}{5}\).

Need help? Join our JC Math tuition classes.

Learn more