Question

The following table shows the information regarding the milk collected from farmers on a milk collection centre and the content of fat in the milk, measured by a lactometer. Find the mode of fat content.

Content of fat (%)	2-3	3-4	4-5	5-6	6-7
Milk collected (Litre)	30	70	80	60	20

Answer 1

Here, the maximum frequency is 80. 

∴ The modal class is 4 – 5. 

L = lower class limit of the modal class = 4

h = class interval of the modal class = 1 

f₁ = frequency of the modal class = 80 

f₀ = frequency of the class preceding the modal class = 70 

f₂ = frequency of the class succeeding the modal class = 60

∴ The mode of the fat content is 4.33%