Constructing Stem-and-Leaf Diagram
Constructing Stem-and-Leaf Diagram
Secondary 2
The masses, measured to the nearest kilogram, of \(20\) boys are given in the table below.
\(80\) | \(46\) | \(55\) | \(57\) | \(71\) |
|---|---|---|---|---|
\(59\) | \(49\) | \(75\) | \(72\) | \(56\) |
\(76\) | \(85\) | \(62\) | \(65\) | \(63\) |
\(48\) | \(68\) | \(75\) | \(61\) | \(55\) |
- Represent the above data in a stem-and-leaf diagram.
- Find the percentage of boys who have a mass of at least \(60\) kg.
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Answer:(i) Stem-and-leaf rows: \(4\mid6\,8\,9\), \(5\mid5\,5\,6\,7\,9\), \(6\mid1\,2\,3\,5\,8\), \(7\mid1\,2\,5\,5\,6\), \(8\mid0\,5\) (ii) \(60\%\)
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