A relative value chart is one that maps one specific item across two axes. It uses a graphing method and is first established by plotting points and then connecting them.

Typical Uses

It is very useful when trying to track the numeric value of something over time, for instance, temperature over the course of a month, sales over the course of a year, or even income depending on the number of customers.

Best Practices

• Determine the purpose. Decide what you are making the chart about and place the name at the top of the page.
• Create a table. Create a table with an x and y plane, or one horizontal line, connected to a vertical line.
• Label each axis. If time is going to be one of the factors on your chart it should go along the horizontal x axis. Whatever other numeric values are being included should be placed along the vertical y axis. Each axis should be labeled with the name of the numeric system as well as the measurements being used. Divide each axis evenly into applicable increments.
• Create lines. Create a line for each item you will be tracking along the graph. To do this, place a point above the corresponding x value and across from the corresponding y value. Make sure there is a point above each of the x values before connecting each point to create a line.
• Create a key. If there are more than one line, create a key to help identify between them.
• Verify accuracy and share. Consult with coworkers or team members to be sure that your chart is accurate before sharing it with others.