given that mean of 5 observations is 27 if one of the number is excluded then the mean gets reduced by 2 determine the excluded number.
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Answered by
3
mean of 5 no=27
27*5=135
mean of 6no=25
6*25=150
exclude no is 150-135=15
hop it helps
Prakrati1:
but if one number has got reduced then the number of observations must be 4..i think it should be 25×4 = 100
therefore, 135-100 = 35
yeah
how is my answer
you are wrong because here is given only 5 observation and when you subtract from this one observation then you get 4 observation?
Answered by
1
as we know that for finding the sum of the number we multiply number of observation into .threfore
5*27=135
now now according to question
let's to know the number which is excluded from the sum of the numbers x.
therefore now according to question (135 - x)/5 is equal to 27 - 2.
135-x=25*5
135 -x=125
now
135 =x+125
135-125=x
x=10 therefore the number which is excluded from the number of observation is 10.
5*27=135
now now according to question
let's to know the number which is excluded from the sum of the numbers x.
therefore now according to question (135 - x)/5 is equal to 27 - 2.
135-x=25*5
135 -x=125
now
135 =x+125
135-125=x
x=10 therefore the number which is excluded from the number of observation is 10.
am I right or wrong
i think u r wrong
okk
u can see my answer
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