AQA Further AS Paper 2 Statistics 2024 June — Question 4 4 marks

Exam BoardAQA
ModuleFurther AS Paper 2 Statistics (Further AS Paper 2 Statistics)
Year2024
SessionJune
Marks4
TopicMeasures of Location and Spread
TypeCalculate statistics from discrete frequency table
4 The discrete random variable \(Y\) has probability distribution
\(y\)15213643
\(\mathrm { P } ( Y = y )\)0.160.320.290.23
The standard deviation of \(Y\) is \(s\) 4
  1. Show that \(s = 10.53\) correct to two decimal places.
    [0pt] [4 marks]
    4
  2. The median of \(Y\) is \(m\) Find \(\mathrm { P } ( Y > m - 1.5 s )\)
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