Then, derive the frequency density for each interval by dividing the frequency by the corresponding class width. Next, develop a table or spreadsheet with frequencies for each interval.Class width = Range / Number of intervals Now, determine the width of the interval class by dividing the range of the data sample by the number of intervals.As a thumb rule, use 10 as the number of intervals or -The number of intervals can be calculated by the square root of the number of data points, which is then rounded off to the nearest whole number. Next, determine the number of class intervals which can be based on either of the following two methods,.Step 3: Next, determine the range of the sample, which is the difference between the maximum and minimum values in the data sample.Now, count the number of data points gathered.Once decided, the data is gathered and presented in a tabular form, such as a spreadsheet. Firstly, it is to be decided on how the process should be measured and what data should be collected.The formula for calculation of the area of the histogram can be derived by using the following simple seven steps: Source: Histogram Formula () Explanation of the Histogram Formula
#Excel histogram how to#
You are free to use this image on your website, templates etc, Please provide us with an attribution link How to Provide Attribution? Article Link to be Hyperlinked The area of histogram formula is mathematically represented as, The formula for the histogram basically revolves around the area of the bars, and it is very simple, and it is calculated by the summation of the product of the frequency density of each class interval and the corresponding class interval’s width. Histogram is a type of graphical representation in excel and there are various methods to make one, but instead of using the analysis toolpak or from the pivot table we can also make a histogram from formulas and the formulas used to make a histogram are FREQUENCY and Countifs formulas together.