What is the arithmetic mean of #25.2#, #13.5#, #18.5# and #34.8#?

Question

(a) #13.5#
(b) #23#
(c) #18#
(d) #34.8#

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Answer 1 · 2016-08-22T17:36:47

#b) 23#

Mean

#=(25.2+13.5+18.5+34.8)/4#

#=92/4#

#=23#

Answer 2 · 2016-08-22T17:40:54

The answer is (b) #23#.

The arithmetic mean is sum of all the data points or numbers divided by their number.

Here we have four data points / numbers which are #25.2#, #13.5#, #18.5# and #34.8#.

Their sum is

#25.2+13.5+18.5+34.8=92.0# and their arithmetic mean is #92.0/4=23#.

Hence, answer is (b) #23#.