Question

If the mean and mode of the data 3,5,2,x,3,y,5 (y<x)are 4 and 3respectively, then the value of 2x+yis:
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Answer 1

Answer:

Let's first understand what mean term is in mathematics. In simple way mean is an average of given dataset or sample of numbers.

How to find mean?

Mean = Sum of all values / Toal number of values

Come back to your problem and will try to solve using above formula.

Here, mean is 5

And toal number of values are 6 (i.e. 2, 4, 6, 8, x and y)

So, 5 = ( 2 + 4 + 6 + 8 + x + y ) / 6

Thus, 2 + 4 + 6 + 8 + x + y = 30

Thus, x + y = 30 - ( 2 + 4 + 6 + 8 )

Thus, x + y = 30 - 20

Therefore, x + y = 10