Question 20
EasyOriginal questionA health worker recorded the number of children in each of 50 households of a village.
| Number of children | Number of households |
|---|---|
| 0 | 6 |
| 1 | 14 |
| 2 | 18 |
| 3 | 8 |
| 4 | 4 |
Using the village survey, what is the median number of children per household?
Show the answer and explanation
CorrectNot quiteAnswer C
Correct answer: C
Explanation
With 50 households the median is the average of the 25th and 26th values.
Cumulative frequencies: 6 (0 children), 20 (up to 1), 38 (up to 2).
The 25th and 26th households both fall in the '2 children' row, so the median is 2.
Worth noting
18 is the largest frequency, not a number of children. 1.8 is the mean.
- Concept
- Median of a discrete frequency distribution using cumulative frequency
- Typical timeTypical
- 40 s
- Your timeYours
- —
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