Grouped Data: Distance Travelled by Individuals
Grouped Data: Distance Travelled by Individuals
Secondary 2
The data below represent the distance in km travelled by \(20\) people from home to their workplace.
\(11\) | \(5\) | \(9\) | \(35\) | \(43\) | \(16\) | \(23\) | \(27\) | \(21\) | \(12\) |
|---|---|---|---|---|---|---|---|---|---|
\(3\) | \(11\) | \(16\) | \(5\) | \(31\) | \(35\) | \(11\) | \(23\) | \(15\) | \(24\) |
- Complete the frequency table for the data.
Distance (\(d\) km)
\(0<d\le 10\)
\(10<d\le 20\)
\(20<d\le 30\)
\(30<d\le 40\)
\(40<d\le 50\)
Number of people
- Using the frequency table in (i), calculate an estimate for the mean of the distance travelled by the \(20\) people.
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Answer:(i) Frequencies \(4,7,5,3,1\) (ii) \(20\) km
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