(a)[4]
Draw a histogram to display this data.
(b)[2]
The interquartile range is $R$ cm. Show that $R$ is not greater than $15$.
Mathematics 9709 · AS & A Level · Representation of data
Representation of data — practice question
The table below gives the heights, in cm, of 200 adults in Barimba: height intervals $130 \le h < 150$, $150 \le h < 160$, $160 \le h < 170$, $170 \le h < 175$, $175 \le h < 195$ with matching frequencies $16$, $32$, $76$, $64$, $12$.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Frequency densities for at least four classes are worked out correctly using $\frac{f}{cw}$.” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI