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The ages (years) of 80 members of a Kolkata library are tabulated:
10-20 -> 8, 20-30 -> 14, 30-40 -> 16, 40-50 -> 22, 50-60 -> 20.
Find the median age.

Class 10Median of Grouped DataStatistics and Probability
  • A36.91
  • B81.82
  • C40.91
  • D44.91

Step-by-Step Solution

. Cumulative: 8, 22, 38, 60, 80. cf just greater than 40 is 60, so median class is 40-50. , cf = 38, . Median = (approx). Correct value 40.91.
Answer: C) 40.91

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