Directions: The table given below shows number of students from streams A and B for a college in the years 2011 to 2015. | Year | A | B | | --- | --- | --- | | 2011 | 520 | 740 | | 2012 | 610 | 790 | | 2013 | 490 | 670 | | 2014 | 540 | 720 | | 2015 | 900 | 990 | What is the average number of students in stream A from 2011 to 2015?

Using the direct average method, we find the sum of students in stream A across the five years as 520 + 610 + 490 + 540 + 900 = 3060. We divide this total sum by the number of years, which is 5. The average number of students in stream A is 3060 / 5 = 612.

• Thanks
• Wrong explanation