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6 marksStatistical Diagrams

CSEC Mathematics · May/June 2007 · Paper 2 · Question 7(c)

Using a scale of 2 cm to represent 5 seconds on the horizontal axis and a scale of 1 cm to represent 1 student on the vertical axis, draw a frequency polygon to represent the data. NOTE: An empty interval must be shown at each end of the distribution and the polygon closed.

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  1. 7(a)Copy and complete the frequency table to represent this data.[2 marks]
  2. 7(b)Using the raw scores, determine the range for the data.[2 marks]
  3. 7(d)To qualify for the finals, a student must complete the race in less than 60 seconds. What is the probability that a student from this class will qualify for…[2 marks]

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