In a frequency distribution, the mild-value of a class is 10 and width of each class is 6. The lower limit of the class is

Question

Philoid · Accepted Answer

Let the upper limit of class = u

Let lower limit of class = l

Mild value = 10 (given)

We know that,

Mild value = 1/2 (u + l)

10 = 1/2 (u + l)

= u + l = 20..............(i)

Width of class = 6 (given)

= u – l = 6 ................(ii)

Subtracting equation (ii) from equation (i), we get,

2l = 14

= l = 14/2 = 7.

lower limit = 7.