How Do You Find the Class Width of a Frequency Table

Calculate the range of the entire data set by subtracting the lowest point from the highest,Divide it by the number of classes.Round this number up (usually, to the nearest whole number).

What is the class width of the frequency distribution?

In a frequency distribution, class width refers to the difference between the upper and lower boundaries of any class or category. e.g. – the class width for the first class is 5-1 = 4. The class width for the second class is 10-6 = 4, and so on.

How do you find the class of a frequency distribution?

Creating a Grouped Frequency Distribution. Select the number of classes desired. This is usually between 5 and 20. Find the class width by dividing the range by the number of classes and rounding up.