(a(i))[3]
Find the median and quartiles for type $A$ smartphones.
(a(ii))[3]
Represent the data by drawing a pair of box-and-whisker plots in one diagram on graph paper.
(a(iii))[1]
Compare the loading times of these two smartphone types.
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
The back-to-back stem-and-leaf diagram below gives the loading times for an application on $61$ type $A$ smartphones and $43$ type $B$ smartphones.