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The cumulative frequency table of donations (Rs) collected from 25 students for a Diwali fund is:
Class 0-50: 3, 50-100: 7, 100-150: ?, 150-200: 5
If the cumulative frequency 'less than 150' is 20, find the frequency of the class 100-150.

Class 10Cumulative Frequency and OgiveStatistics and Probability
  • A20
  • B11
  • C9
  • D10

Step-by-Step Solution

Less than 100 = 3 + 7 = 10. So frequency(100-150) = (less than 150) - (less than 100) = 20 - 10 = 10.
Answer: D) 10

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