6. Find the median of the following distribution. 140 142 145 148 150 152 156 Height (in cm) No. of Students 3 5 7 13 9 8 5
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Step-by-step explanation:
To find, the median class = ?
Class interval Frequency(f) Cumulative frequency(cf)
140-145 5 5
145-150 15 20
150-155 25 45
155-160 30 75
160-165 15 90
165-170 10 100
Total Σf = n = 100
∴ \dfrac{n}{2} =\dfrac{100}{2} =50
2n
n=2
100=50
Median class = 155 - 160
Thus, the median class is 155 - 160.
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