CAT Practice : Averages - Sets of numbers

Understanding weighted averages is very vital in this topic. When a set of terms is counted multiple times, tracking how many times each term is counted becomes important.

Averages - Sets of numbersn

    Q.11: From 10 numbers, a, b, c,...j, all sets of 4 numbers are chosen and their averages computed. Will the average of these averages be equal to the average of the 10 numbers?

 

  • Correct Answer
    Yes

Detailed Solution

Yes. All the terms appear the same number of times when we select them 4 at a time. So, the average of averages will be equal to the overall average.




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