The enrolment in a school during six consecutive years was as follows: 1555, 1670, 1750, 2013, 2040, 2126. Find the mean enrolment in the school during this period.
Given: Enrolment values: 1555, 1670, 1750, 2013, 2040, 2126 Formula: Mean = (Sum of values) ÷ (Number of values) Substitution: Mean = (1555 + 1670 + 1750 + 2013 + 2040 + 2126) ÷ 6 Calculation: Total enrolment = 1555 + 1670 + 1750 + 2013 + 2040 + 2126 = 11154 Mean = 11154 ÷ 6 = 1859 Answer: The mean enrolment is 1859 students (approximately).
Explanation
The mean is calculated by adding all enrolment values and dividing by the number of years. Total enrolment = 1555 + 1670 + 1750 + 2013 + 2040 + 2126 = 11154. Mean = 11154 ÷ 6 = 1859 students.
Solution Steps
Step 1: Add all enrolment values: 1555 + 1670 + 1750 + 2013 + 2040 + 2126 = 11154
Step 2: Count the number of years: 6
Step 3: Divide total by number of years: 11154 ÷ 6 = 1859