# Measurement of computer chip’s thickness (in monometers) is recorded below. Thickness of chips (in nanometers) 34-39 39-44 44-49 49-54 54-59 Total Number of computers 3 11 16 25 5 60 Find the mode of thickness of computer chips and interpret the result.

Solution:

Here,

 Thickness No. of computer(f) 34-39 3 39-44 11 44-49 16 49-54 25 54-59 5 N = 60

Here, 49-54 class has highest frequence

Therefore, modal class = 49-54

Now, mode = $$L + \frac{f_1 – f_0}{2f_1 – f_0 – f_2}$$

= $$49 + \frac{25 – 16}{2 \times 25 – 16 – 5}$$

= 49.31