In this histogram above find the following the following lab

In this histogram above find the following:

(the following labels are class boundaries, data used in this histogram looks like Length 7.2, 10.4, 22.3,..etc)

Sample Size:

Class Width:

Tolerance:

Solution

sample size is the sum of frequencies of each class

=>

sample size = 13 + 9 + 3 + 1 + 2 + 1 + 1 = 30

Class width is the difference between successive points on x-axis

class width = 10

tolearance is the error allowed

Tolerance = 0.1