The given bar graph shows the number of students of two schools over a period of six years.
In the bar graph, what is the ratio of the average of total students from school B to the average of total students from school A?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e 370 : 429.
Average = Sum of observations/Number of observations
Average of total students from school B = (550 + 820 + 600 + 750 + 500 + 480)/6 = 3700/6
Average of total students from school A = (640 + 800 + 500 + 700 + 900+ 750)/6 = 4290/6
Required ratio = 3700/6 : 4290/6 = 370 : 429