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9709/62

Mathematics 9709/62 — May/June 2010

Cambridge AS Level · Probability & Statistics 1 · worked solutions for every part, with the mark scheme

7
questions
50
marks
75
minutes

Topics Representation of Data · The Normal Distribution · Discrete Random Variables · Probability · Permutations and Combinations

Q1Representation of DataFree sample

The times in minutes for seven students to become proficient at a new computer game were measured. The results are shown below.

1510481019141615 \quad 10 \quad 48 \quad 10 \quad 19 \quad 14 \quad 16
(i)

Find the mean and standard deviation of these times.

2M
(ii)

State which of the mean, median or mode you consider would be most appropriate to use as a measure of central tendency to represent the data in this case.

1M
(iii)

For each of the two measures of average you did not choose in part (ii), give a reason why you consider it inappropriate.

2M

The rest of this paper

6 more questions
  • Q2The Normal Distribution · Discrete Random Variables5M
  • Q3Representation of Data6M
  • Q4The Normal Distribution6M
  • Q5Probability8M
  • Q6Discrete Random Variables · Permutations and Combinations · Probability10M
  • Q7Permutations and Combinations10M
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