Mathematics is the key to doing well in SBI Clerk, SBI PO, IBPS PO, IBPS Clerk, SSC CGL, SSC CHSL and other competitive exams. Of the many topics that are asked in competitive exams Average is a common topic. Assumed average can be a very useful method to solve questions on Average and earn some time for yourself.
So here is a series of blog posts about such smart methods that will help you solve questions in 5- 10 seconds that would otherwise take 30- 45 seconds. Questions on average come in most competitive exams and how to use Assumed Average to solve questions on Average can be a very useful concept to save time.
What is Average?
Formula for Average-
Example for Questions on Average
a) 25 b)30 c)33 d)None of these
Conventional Method to Solve Questions on Average
34+ 29+ 42+ 35+ 22+ 30)/ 6
Without a doubt this is the correct answer, however it took you almost 20 seconds to arrive at this answer. But is this a smart method? Is it advisable to use this method when you are preparing for exam? Time to say goodbye to such long methods and start your exam preparation using some smart methods!
Smart Method to Solve Questions Using Assumed Average
Deviation of values from assumed average= (+4 –1 +12 +5 -8 +0)/ 6
12/ 6 = 2
Therefore, the average is 30+ 2= 32
Wasn’t that just 5 seconds of simple, quick calculations for to you reach your answer!
Watch our expert faculty explain this smart method.
Try solving this question by using Assumed Average!
What is the average of 144, 153, 149, 135, 140
1) 139 2) 144.2 3) 135 4) 141.6 5) None of these
Write your answers in the comment section and tell us how Assumed Average helped you to solve questions on Average.