Question

The mean of 5 observations is 20. If 2 is subtracted from each observation, then the mean of the new data set is​

Answer 1

Answer:

18

Step-by-step explanation:

mean of 5 observation = 20

total of 5 observation = 20*5 = 100

2 is subtracted from each observation,

2*5 = 10,

100-10 = 90

now mean of 5 observation = 90/5 = 18