# The mean of 25 observation is 36. out of these observations if the mean of first 13 observation is 32 and that of the last 13 observation is 40, then the 13th observation is ?

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The Brainliest Answer!

this is because 13 element is taken twice when adding first and last 13 elements

that is

36=32+40-x

x=36

x=36

the mean of first 13 observation is 32.

the last 13 observation is 40

then,

13 element is taken twice when adding first and last 13 elements

that is

36=32+40-x

x=36

x=36