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Q.7 The enrolment in a school during six consecutive years was as follows:
1555, 1670, 1750, 2013, 2540, 2820 Find the mean enrolment of the school for this period.
Answer :

Mean enrolment = $$\frac{sum of all enrolment}{number of enrolment} $$ $$= \frac{1555+1670+1750+2013+2540+2820}{6}=\frac{12348}{6}=2058 $$ Thus the required mean = 2058