10 babies were born in a hospital 5 were less than 2.5 kg. And 5 were greater than 2.5 kg the average is -a) Arithmetic averageb)  Geometric averagec) Median disposal d)  Mode average
From the given data it can be mean or it can be median. Lets see :-
Suppose the weight of 10 newborn are :­1.8, 2.7, 2.9, 2.1, 1.8, 3.0, 3.2, 2.3, 3.2, 2.0
5 values are less than 2.5 and 5 values are more than 2.5

Mean
mean = 1.8 + 2.7 + 2.9 + 2.1 + 1.8 + 3.0 + 3.2 + 2.0 / 10 = 25/10 = 2.5
Median
Arrange the data in ascending order :-
1.8, 1.8, 2.0, 2.1, 2.3, 2.7, 2.9, 3.0, 3.2, 3.2
Now there are two mid values → 2.3 & 2.7
So, median = 2.3 + 2.7 / 2 = 5/2 = 2.5
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