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Find the median of: classes 1–10, 11–20, 21–30, 31–40, 41–50 with frequencies 3, 7, 15, 10, 5.

Competition practiceStatistics
  • A27 2/3
  • B27 1/6
  • C26 2/3
  • D25 1/2

Step-by-Step Solution

Convert to true limits (0.5–10.5, …). ; cf 3, 10, 25 → class 20.5–30.5. Median .
Answer: B) 27 1/6

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