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Using the same polygon as before, with points (5,0), (15,6), (25,10), (35,14), (45,8), (55,2), (65,0):
What is the total number of students represented?

Class 9Frequency PolygonsStatistics and Probability
  • A44
  • B80
  • C40
  • D36

Step-by-Step Solution

Sum the actual class frequencies (ignore the zero-frequency end points): 6 + 10 + 14 + 8 + 2 = 40.
Answer: C) 40

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