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Question -

The median of the following data is 525. Find the missing frequency, if it is given that there are 100 observations in the data:



Answer -

Median = 525, N = 100

⇒525 – 500 = (14 -f1) x 5

⇒ 25 = 70- 5f1
⇒ 5f1 =70 – 25 = 45
⇒ f1 = 45/5 =9
and f2 = 24 – f1 = 24 – 9 = 15
Hence f1 = 9, f2 = 15

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