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In a distribution all five classes 0-10, 10-20, 20-30, 30-40, 40-50 have EQUAL frequency. What is the median?

Class 10Median of Grouped DataStatistics and Probability
  • A25
  • B23
  • C27
  • D50

Step-by-Step Solution

Let each frequency be . Cumulative: . cf just exceeding is , median class 20-30, , cf = , freq = . Median = .
Answer: A) 25

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