What is class boundary? Is it same as class limit? How to calculate class boundary for exclusive type of data?

Not sure this is what you are seeking, but this is what I got from the Internet:

Class Boundary : Class Boundary is the number used to separate the two different classes. It is the midpoint between the upper class limit of a class and the lower class limit of the next class. Each class have both upper and lower limit boundary.

Did you know?

Did you know that class boundary refers to the values that separate different classes or intervals in a frequency distribution? Although class boundary is sometimes used interchangeably with class limit, they are not the same. Class limit represents the exact values that define the upper and lower boundaries of a class, while class boundary includes half of the space between adjacent classes. Calculating class boundaries for exclusive data involves finding the midpoints between the upper and lower class limits. This is achieved by subtracting 0.5 from the lower limit and adding 0.5 to the upper limit of each class. These boundaries are useful for ensuring that data values falling on the interval boundaries are correctly assigned to the appropriate class.