Study the following table carefully to answer the question

Marks obtained by the students in different subject at board examination.

What is the average of marks obtained by the all students in computer?

90

Sum of marks obtained in Computer = 90 + 90 + 80 + 95 + 85 + 100 = 540

Total students = 6

Average marks = \(\frac{\text{sum of observations}} {no. of observations}\) = \(\frac{540}{6}\) = 90