CAPE Applied Mathematics Unit 1 · 2014 · Paper 1 · Question Q7
Items 6–7 refer to the following table which shows the scores obtained by Jack in a game. Jack's mean score is 5.
\begin{array}{|l|c|c|c|c|} \hline \text{Score} & 1 & 2 & 4 & x \\ \hline \text{Frequency} & 2 & 5 & 7 & 6 \\ \hline \end{array}
The variance of the distribution is
- (A)6.1
- (B)11.7
- (C)32.4
- (D)36.7
This question uses a figure or table from the paper — you'll see it when you practise.
The answer is shown once you've answered.
Practise this question