find median C.I. 10-19 20-29 30-39 40-49 50-59 60-69 F 12 19 20 21 15 13
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1
Answer:
13.2
Explanation:
median = n/2 - cf x i
f
= 100/2 - 72 x 9
15
= 50 - 72 x 9
15
= 22 x 9
15
= 198/15
= 66/5 = 13.2
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