Data Handling: Stem-and-Leaf and Percentage of Students
Data Handling: Stem-and-Leaf and Percentage of Students
Secondary 2
The following set of data shows the average number of hours spent on social media by a group of \(20\) students in a week during the holidays.
\(15\) | \(21\) | \(9\) | \(10\) | \(19\) | \(5\) | \(13\) | \(23\) | \(5\) | \(28\) |
|---|---|---|---|---|---|---|---|---|---|
\(7\) | \(15\) | \(32\) | \(18\) | \(24\) | \(13\) | \(34\) | \(7\) | \(8\) | \(18\) |
- Represent the above data in a stem-and-leaf diagram.
- Find the percentage of students who have spent at least \(15\) hours in a week on social media during the holidays.
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Answer:(i) See the typed stem-and-leaf diagram. (ii) 55%.
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