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5 marksStatistical Diagrams

CSEC Mathematics · January 2014 · Paper 2 · Question 7(d)

Using a scale of 2 cm to represent 5 cm on the horizontal axis and 2 cm to represent 5 seedlings on the vertical axis, draw a frequency polygon to represent the data as shown in your table at (c).

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Other parts of this question

  1. 7(a)How many seedlings were in the sample?[1 mark]
  2. 7(b)(i)Write down the lower class limit.[1 mark]
  3. 7(b)(ii)Write down the upper class boundary.[1 mark]
  4. 7(b)(iii)Write down the class width.[1 mark]
  5. 7(c)(i)Copy and complete the table by inserting the midpoints of EACH class interval.[2 marks]
  6. 7(c)(ii)Copy and complete the table by inserting the missing values for the class interval after the interval "33-37".[1 mark]

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