Pearson Edexcel Level 3 GCE... Mathematics Advanced Subsidiary PAPER 21: Statistics. DOWNLOAD TO SCORE A+

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VVVThe Venn diagram, where p is a probability, shows the 3 events A, B and C with their associated probabilities. (a) Find the value of p. (1) (b) Write down a pair of mutually exclusive events fr... om A, B and C. (1) _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ ___________________________________________________ 2. The partially completed table and partially completed histogram give information about the ages of passengers on an airline. There were no passengers aged 90 or over. Age (x years) 0  x < 5 5  x < 20 20  x < 40 40  x < 65 65  x < 80 80  x < 90 Frequency 5 45 90 1 10 20 30 40 50 60 70 80 90 x y 0 0 Frequency density Age (years) (a) Complete the histogram. (3) (b) Use linear interpolation to estimate the median age. (4) An outlier is defined as a value greater than Q3 + 1.5×interquartile range. Given that Q1 = 27.3 and Q3 = 58.9 (c) determine, giving a reason, whether or not the oldest passenger could be considered as an outlier. (2)*P66806A0516* Turn over 5 Question 2 continued _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _______________________________________________________ [Show More]

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