The following table gives the enrolment in Higher Secondary Schools in 1978. Study the table carefully and answer these questions.
Average enrolment is the average of mean enrolment
= $$\frac{(29.5+49.5+69.5+89.5+109.5+129.5+149.5+169.5+189.5)}{9}$$
= $$\frac{985.5}{9}=109.5$$
=> Ans - (C)
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