The number of students in Class XI in Science, Arts and Commerce streams of a school over a period of 4 years (2011 - 2014) has been depicted through the bar chart given below.
What is the average of the number of Arts students in the given class over the given period of 4 years?
Answer & explanation
Correct answer: option 2
Average number of Arts students = \(\frac{30 + 50 + 20 + 20 }{4}\)
= \(\frac{120 }{4}\)
= 30