Question

$20$ high schools were surveyed on the number of languages offered in their curriculum. The results are shown in the chart above. How many schools offer fewer languages than average across the $20$ schools?

• A. $9$
• B. $10$
• C. $11$
• D. $17$

Answer 1

The correct option is A $9$

Average of language used by schools$=\frac{1\times 0+3\times 1+5\times 2+3\times 8+4\times 2+5\times 1}{20}$

$=\frac{3+10+24+8+5}{20}$

$=2$

Hence total schools teaching less than $2$ languages $=5+3+1$

$=9$.