CAIE S1 2023 November — Question 4

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2023
SessionNovember
TopicData representation
TypeDraw histogram then perform calculations

4 The times, to the nearest minute, of 150 athletes taking part in a charity run are recorded. The results are summarised in the table.
Time in minutes\(101 - 120\)\(121 - 130\)\(131 - 135\)\(136 - 145\)\(146 - 160\)
Frequency1848343218
  1. Draw a histogram to represent this information.
    \includegraphics[max width=\textwidth, alt={}, center]{e8c2b51e-d788-4917-829e-1b056a24f520-08_1493_1397_936_415}
  2. Calculate estimates for the mean and standard deviation of the times taken by the athletes.