OCR MEI Paper 2 2018 June — Question 4

Exam BoardOCR MEI
ModulePaper 2 (Paper 2)
Year2018
SessionJune
TopicMeasures of Location and Spread
TypeCalculate statistics from discrete frequency table

4 A survey of the number of cars per household in a certain village generated the data in Fig. 4. \begin{table}[h]
Number of cars01234
Number of households82231277
\captionsetup{labelformat=empty} \caption{Fig. 4}
\end{table}
  1. Calculate the mean number of cars per household.
  2. Calculate the standard deviation of the number of cars per household.