Find the mean, mode and median of this data.
6, 15, 12, 9, 10, 21, 15, 16, 15, 25
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Find the mean, mode and median of this data.
6, 15, 12, 9, 10, 21, 15, 16, 15, 25
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Answer:
mean: Sum of all observations ÷number of observations
here
mean= (6+15+12+9+10+21+15+16+15+25)÷10
= 144÷10
therefore mean= 14.4
mode: most frequently occuring numbers
mode=15
median:
first let's arrange in ascending order
6,9,10,12,15,15,15,16,21,25
formula of median if there are even number of observations is (n)/2,(n+2)/2
here n= 10; n/2=10/2=5
(n+2)/2=(10+2)/2= 12/2=6
now let's do the mean of 5th and 6th observations so that we get median
5th observation is 15 and 6th observation is 15
15+15÷2= 30/2=15
therefore median is 15
mean=14.4; mode=15; median=15