Equal-width frequency-density histogram
Equal-width frequency-density histogram
TGM Original
The following shows the parking time, \(x\) minutes, during peak hours of \(30\) cars in a carpark.
\(5\) | \(35\) | \(70\) | \(100\) | \(110\) | \(65\) | \(85\) | \(39\) | \(14\) | \(45\) |
|---|---|---|---|---|---|---|---|---|---|
\(120\) | \(60\) | \(80\) | \(50\) | \(20\) | \(15\) | \(37\) | \(20\) | \(85\) | \(55\) |
\(10\) | \(30\) | \(55\) | \(75\) | \(90\) | \(34\) | \(68\) | \(42\) | \(3\) | \(112\) |
- Using the class intervals \(0 < x\le 30\) , \(30 < x\le 60\) and so on, construct a frequency table for the data.
- Draw a frequency-density histogram for these data, labelling both axes.
Solution:
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Answer:Frequencies \(8,10,8,4\); frequency densities \(4/15,1/3,4/15,2/15\).
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