the mean of 12 number s is 40 . if each number is multiply by 8 . what will be new mean
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Answer:
Step-by-step explanation:
mean of 12 nos=40
if each no is multiplied by 8 so new mean= 40*8=320
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£fi=12
£fixi=sum of all frequencies=x
After adding new values
£fixi=x×8
mean=£xifi/£fi
40=X×8/12
40×12=x×8
40×12/8=×
x=60
x×8=60×8=480
mean =480/12=40
£fixi=sum of all frequencies=x
After adding new values
£fixi=x×8
mean=£xifi/£fi
40=X×8/12
40×12=x×8
40×12/8=×
x=60
x×8=60×8=480
mean =480/12=40
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