Question

Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT
below

What is the lower class boundary for the first class
class boundary =

Answer 1

Answer:

139.5

Step-by-step explanation:

Class boundaries are the numbers that are used to differentiate the two classes or in other words we can say that the Class boundaries define the end points of the classes.

We need to find the lower class boundary of the first class. The first class is:

140 - 149

In order to find the lower class boundary, we have to subtract the " half of gap between two classes" from the lower class limit.

Gap between two classes can be calculated as "Difference of upper class limit of first class and lower class limit of next class"

So,

Gap = Lower Class limit of 2nd class - Upper Class limit of 1st class

Gap = 150 - 149 = 1

Lower class boundary = Lower class limit - Half of the gap

Lower class boundary of First class = 140 - 0.5(1) = 139.5