1.

The mean of a set of observation is \[\bar{x}.\]if each observation is divided by \[\alpha ,a\ne 0\] and then is increased by 10, then the mean of the new set is

A. \[\frac{{\bar{x}}}{a}\]
B. \[\frac{\bar{x}+10}{a}\]
C. \[\frac{\bar{x}+10a}{a}\]
D. \[a\bar{x}+10\]
Answer» D. \[a\bar{x}+10\]


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