GCSE · Histograms

Interpreting histogramsExam-style questions

Getting information back out of a histogram — a frequency is an area, so part of a class is the matching proportion of a bar's area. Why that rests on values being spread evenly within a class (and is therefore an estimate), and how to read off a total, a mean, the median class, a range that cuts across class boundaries, and a comparison of two groups.

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12 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAll Level 2 Level 3 Level 4 Level 5

1
A bank recorded the waiting times, in minutes, of its customers at two branches on the same morning.

Branch A ( $80$ customers)Branch B ( $100$ customers)(a) Estimate the number of customers at branch A who waited less than $20$ minutes.

(b) Estimate the number of customers at branch B who waited less than $20$ minutes.

(c) Use the histograms to compare the waiting times at the two branches.
Level 5 · 6 marksTry it
2
The histogram gives information about the amounts of money spent by the shoppers in a shop one morning.

(a) Work out an estimate for the median amount spent.

(b) Rani says, "More than a quarter of these shoppers spent at least £ $40$ ."

Is Rani correct? You must show your working.
Level 5 · 6 marksTry it