Data was collected abou ine
battery life of two different brands
of wireless headphones. The times
the headphones worked for after
being fully charged are shown below.
a) Work out estimates for the
median and the interquartile range
of the times for
i) brand A.
ii) brand B.
b) Give two comparisons between
the brands of headphones.
Frequency density
201
16-
12-
8-
1
3
4
Brand A
л-
6 7 8
Brand B
1
2
3
4
5
Time (hours)
