If 12 is the mean of 10 observations and 10 is added to each observation, then the new mean is:
(A) 120
(B) 13
(C) 24
(D) 22
Answers
Answered by
7
22 is it right?......
Mangalsana:
22 is correct
Answered by
40
sum of 12 observation = 12 x10 = 120
10 is added to each total addition = 10 x 10 = 100
new mean = total / no. of observation = (120 + 100 ) / 100 = 22
10 is added to each total addition = 10 x 10 = 100
new mean = total / no. of observation = (120 + 100 ) / 100 = 22
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