question_answer 7)

The enrolment of 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 of the school for this period. \[\text{=}\frac{\text{sum of all observaions}}{\text{number of obsesrvations}}\] \[\text{=}\frac{1555+1670+1750+2013+2540+2820}{6}\] \[=\frac{12348}{6}=2058\]