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Example 8 - Consider the marks obtained by 51 students - Frequency polygon

  1. Chapter 14 Class 9 Statistics
  2. Serial order wise
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Example 8 Consider the marks, out of 100, obtained by 51 students of a class in a test. Draw a frequency polygon corresponding to this frequency distribution table. We draw the frequency polygon by drawing a histogram first Calculating points where frequency = 0 Difference = 10 – 0 = 10 First point = (0 + 10)/2 – 10 = 5 – 10 = – 5 Last point = (90 + 100)/2 + 10 = 95 + 10 = 105 So, we plot points (–5, 0) & (105, 0)

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