Question

The table below classifies according to weight, the infants born during a week in a hospital:

Weight (kg)		Number of Infants
2,500 2,600 2,750 2,800 3,000 3,150 3,250 3,300 3,500		4 6 8 10 12 10 8 7 5

Find the median weight.

Answer 1

The given data can be shown as:

Weight (kg)		Number of Infant
Up to 2.500		4
Up to 2.600		10
Up to 2.750		18
Up to 2.800		28
Up to 3.000		40
Up to 3.150		50
Up to 3.250		58
Up to 3.300		65
Up to 3.500		70

Here, we need to find the weight of infant.

From the table it can be inferred that the weight of the 29^th infant to the 40^th infant is 3.000 kg.

So, the weight of the 35^th infant is 3.000 kg.

Thus, the median weight of the infants born during the week in the hospital is 3.000 kg.