The following shows the parking time, $x$ minutes, during peak hours of $30$ cars in a carpark.

Question

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. Using the grid below, draw a histogram to illustrate the data.

Accepted Answer

(i) Frequencies $8,10,8,4$ for $0<x\le30,\ 30<x\le60,\ 60<x\le90,\ 90<x\le120$ (ii) Histogram bars over the same intervals with heights $8,10,8,4$

\(5\)	\(35\)	\(70\)	\(100\)	\(110\)	\(65\)	\(85\)	\(39\)	\(14\)	\(45\)
\(120\)	\(60\)	\(80\)	\(50\)	\(20\)	\(15\)	\(37\)	\(20\)	\(85\)	\(55\)
\(10\)	\(30\)	\(55\)	\(75\)	\(90\)	\(34\)	\(68\)	\(42\)	\(3\)	\(112\)

Histograms for Grouped Data

Histograms for Grouped Data

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