Mean of 10 observation is 12 if each observation is increased by 3 find the new mean
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Given,
the mean of 10 observations is = 12
10×3=30[because every number is increased by 3]
x+30/10=12
x+30=120
x=90
the new mean is = 90/10
=9
the new mean is 9
the mean of 10 observations is = 12
10×3=30[because every number is increased by 3]
x+30/10=12
x+30=120
x=90
the new mean is = 90/10
=9
the new mean is 9
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