Question

b) The mean of six observation is 17.5. If five of them are 14,9,23,25and 10 . Find the sixth observation.​

Answer 1

Answer:

The mean of 6 observations is 7.5 so their sum is 17.5×6=105. But the sum of 5 of them is 14+9+23+25+10=81. So the 6th number is 105-81=24.