the mean of 25 number is 12. if 3 is added to each number find out new mean
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Answered by
2
Hi ,
Mean of 25 numbers = 12
If 3 is added to each number then
the new mean = first mean + 3
= 12 + 3
= 15
I hope this helps you.
: )
Mean of 25 numbers = 12
If 3 is added to each number then
the new mean = first mean + 3
= 12 + 3
= 15
I hope this helps you.
: )
Answered by
0
We know, mean =∑x/total number of data(n)
so ∑x= mean* total number of data that is 12*25=300
Now if 3 is added to each number a total of 3*25(i.e 75) is added to the ∑x while the total number of data (n) remains the same.
so now the mean is
mean= 375/25 [300(∑x) +3*25]
Therefore mean =15
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