Interpreting commuter waiting times

Interpreting commuter waiting times

Secondary 2

TGM Original Questions

The waiting times are shown below.

Stem	Leaf
\(1\)	\(1\) \(3\) \(4\) \(6\) \(6\) \(8\) \(9\)
\(2\)	\(0\) \(1\) \(3\) \(3\) \(3\) \(5\) \(6\) \(8\) \(8\) \(9\)
\(3\)	\(0\) \(2\) \(4\) \(4\) \(7\) \(9\)
\(4\)	\(1\) \(3\)

Key: \(1|1=11\) minutes. Find

the range,
the most common waiting time,
the percentage who waited more than 28 minutes.

Solution:

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Answer:(i) \(32\) min; (ii) \(23\) min; (iii) \(36\%\).

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