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2 marksQuartiles and Percentiles

CSEC Additional Mathematics · 2019 · Paper 2 · Question 7(a)(iv)

The standard deviation of the weights of the boys is 5.53 kg.

Determine the number of students above the 20th percentile for this class.

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Other parts of this question

  1. 7(a)(i)State the number of students in the class.[1 mark]
  2. 7(a)(ii)Construct ONE box-and-whisker plot for the entire Grade 5 class (boys and girls combined).[4 marks]
  3. 7(a)(iii)Determine the standard deviation of the weights of the girls. Provide an interpretation of your answer for the girls compared to that given for the boys.[5 marks]
  4. 7(b)(i)Determine the probability that the apples chosen contain one of EACH colour.[4 marks]
  5. 7(b)(ii)Determine the probability that the apples chosen are ALL of the same colour.[4 marks]

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