Sales of books from four shops (B1, B2, B3, B4) in thousands are given as below. Study the graph and answer the following questions.
The number of shop in which sales of books are below the average level is:
Sales of B1=20000
Sales of B2=40000
Sales of B3=55000
Sales of B4=80000
Average=(20000+40000+55000+80000)/4
=195000/4
=48750
so B1 and B2 are below average level.
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