Question

the mean of 16 observations is 18 if 2 is added to every number find the new mean​

Answer 1

Step-by-step explanation:

Given the mean of 16 observations = 18

also, if 2 is added to every observation,

then the new mean = 18+2

                                 = 20

Property used : when we add a constant to each data point or subtract a constant from each data point, the mean, median, and mode will change by the same amount.