the mean of 5 observation is 20.if each observation is increased by 2 then what is new mean?
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The mean of 5 observation is 20.if each observation is increased by 2 then what is new mean?
Good question,
Here is your perfect answer!
Mean of 5 observations = Sum of all observations / 5
=) 20 = Sum/5
=) Sum of all observations = 20*5
=) Sum of all observations = 100,
If each observation is increased by 2,
Total sum = 100 + 2*5
= 100+10 = 110
Total mean = 110/5
= 22.
hi alia
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Mean of 20 observation =12
sum of all observation /no of observation =12
sum of all the observation =12×20
sum of all observation =240
when it increase 5 time
240×5 =1200
new mean will be
new sum of all observation /no of observation =mean
1200/20 =60
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