Question

a real estate agent drove around the neighborhood and counted the number of houses on each block.
houses per block
stem | leaf
1 | 7
2 | 1 2 5 6 6 7 8 9 9
3 | 1 3 8 8 8
what is the median of the numbers?
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work it out
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Explanation:

Step1: List all data values

From stem-leaf plot: 17; 21,22,25,26,26,27,28,29,29; 31,33,38,38,38
Total values: 1+9+5=15

Step2: Find median position

Median is the $\frac{15+1}{2}=8$th value when sorted.

Step3: Locate 8th value

Sorted list: 17,21,22,25,26,26,27,28,29,29,31,33,38,38,38
8th value = 28

Answer:

28