Back-to-Back Stem-and-Leaf Diagram and Test Score Analysis
Back-to-Back Stem-and-Leaf Diagram and Test Score Analysis
TGM Original
The results scored by students from two classes in a test are shown below.
Class P | \(58\) | \(63\) | \(75\) | \(67\) | \(54\) | \(66\) | \(69\) | \(64\) | \(81\) | \(83\) |
\(68\) | \(77\) | \(78\) | \(61\) | \(75\) | \(68\) | \(73\) | \(82\) | \(53\) | \(85\) | |
Class Q | \(50\) | \(51\) | \(62\) | \(59\) | \(65\) | \(54\) | \(52\) | \(60\) | \(70\) | \(75\) |
\(80\) | \(75\) | \(57\) | \(61\) | \(69\) | \(57\) | \(61\) | \(87\) | \(76\) | \(73\) |
- Represent these two sets of data by a back-to-back stem-and-leaf diagram.
- Which class has the highest score?
- Which class has the lowest score?
- Which class performed better in the test? Explain your answer.
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Answer:(ii) Class Q: \(87\) (iii) Class Q: \(50\) (iv) Class P
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