9709 · topic questions
Representation of data
12 past-paper questions on Representation of data
Calculate estimates of the mean and standard deviation of the times taken to travel to college by the 300 students.
Practise the full question →Draw a histogram to represent this information.
Practise the full question →Draw a back-to-back stem-and-leaf diagram to represent this information, with the Falcons on the left-hand side.
Practise the full question →Draw a back-to-back stem-and-leaf diagram to represent this information, with Gulls on the left-hand side.
Practise the full question →(b) Use your graph to estimate the median and the interquartile range of the data.
Practise the full question →Find the value of ∑y², correct to 1 decimal place.
Practise the full question →Find the mean and the standard deviation of the times taken by all 30 runners from the two teams.
Practise the full question →Find the median and the interquartile range of the salaries of the Petral employees.
Practise the full question →Represent the data shown in the back-to-back stem-and-leaf diagram by a pair of box-and-whisker plots in a single diagram.
Practise the full question →Find the median and the interquartile range of the times for the Falcons.
Practise the full question →Find the median and the interquartile range of the times of the runners from the Gulls.
Practise the full question →(c) Calculate an estimate for the mean value of the times taken by the 200 pupils to walk to school.
Practise the full question →
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