Question

the mean of n10,12,18,13,x and 17 is 15.find the value of x

 

Answer 1

Hi,
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We know that the formula to find

mean of ungrouped data

Mean = ( sum of the observations )/(number of observations )
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According to the problem given,

Observations are 10 , 12 , 18 , 13 , x , 17

Mean = 15 ( given ) ------( 1 )

Mean = ( 10 + 12 + 18 + 13 + x + 17 ) / 6

= ( 70 + x )/6-------( 2 )

( 2 ) = ( 1 )

(70 + x ) / 6 = 15

70 + x = 15 × 6

70 + x = 90

x = 90 - 70

x = 20

Therefore ,

Value of x = 20

I hope this helps you.

:)

Answer 2

Answer:

Hi !!

The above attached file is your answer!!

Step-by-step explanation:

Hope it helps you !!