Study the following graph and answer the question that follows.
Number of students that appeared and qualified. from various colleges, at a scholarship examination.
What is the difference between the average number of students that appeared for the scholarship examination from all the given colleges, and the average number of students that qualified from all the colleges together?
Answer & explanation
Correct answer: option 1
Average number of students appeared for the scholarship exam from all colleges
= \(\frac{2800+1800+3000+2000+2400 }{5}\)
= \(\frac{ 12000 }{5}\)
= 2400
Average number of students qualified for the scholarship exam from all colleges
= \(\frac{1400+1000+1800+1600+1600 }{5}\)
= \(\frac{ 7400}{5}\)
= 1480
Required difference = 2400 - 1480
= 920