How to graph a Normal Distribution
The chart above is built using the NORM.DIST function and is called Normal Distribution or Bell Curve chart.
This curve is often used in probability theory and mathematical statistics.
Instructions
First I'll show you how to construct the data needed, then insert a chart. Lastly, customize the chart to make it look better.
Normal distribution data
The chart requires two sets of data, x and y. Enter values from -4, -3.5, -3 ... to 4, they will be x-axis values shown in column B in the picture below.
The NORM.DIST function allows you to calculate the normal distribution for each x value.
Formula in cell C21:
Copy and paste this formula to cells below, as far as needed.
Insert a chart
Select the cell range, in my example B21:C37.
Go to tab "Insert" on the ribbon then click on the scatter chart button.
Click on "Scatter with smooth lines" button.
The chart shows up, clearly, we have to do a few changes to this chart.
Customize chart
The y-axis values are in the middle of the graph if you want to move it to the left or right follow these steps.
- Right click on x-axis values. (Yes, x-axis.)
- Click on "Format Axis..."
- Find "Vertical axis crosses" setting.
- Select Axis value and type a value. In my example, -6.
Click on major gridlines and press delete button to delete them, if you prefer.
Change the chart title.
Download Excel *.xlsx file
How to graph a normal distribution.xlsx
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