Question

Read the graph and fill in the following:

The range of books sold from April to August is____.

Answer 1

Range of the data is defined as the difference between maximum and minimum observation.

Here, maximum observation $=1000$

Minimum observation $=600$

Therefore,

$$\begin{gathered} \mathrm{Range}=\mathrm{Maximum}\mathrm{number}\mathrm{of}\mathrm{books}-\mathrm{Minimum}\mathrm{number}\mathrm{of}\mathrm{books} \\ =1000-600 \\ =400 \end{gathered}$$
Hence, the range of books sold from April to August is $400$.