Directions: The number of students in Class XI in the Science, Arts, and Commerce streams of a school over 4 years ( 2011 - 2014) has been depicted through the bar chart below.
What is the average of the number of Arts students in the given class over the given period of 4 years?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 30.
Average = Sum of observations/Number of observations
Total number of Arts students = 30 + 50 + 20 + 20 = 120
Average = 120/4 = 30