![]() Use a histogram worksheet to set up the histogram.Collect at least 50 consecutive data points from a process.Histogram Example How to Create a Histogram You wish to communicate the distribution of data quickly and easily to others.Determining whether the outputs of two or more processes are different.Seeing whether a process change has occurred from one time period to another.Analyzing what the output from a supplier’s process looks like.Analyzing whether a process can meet the customer’s requirements.You want to see the shape of the data’s distribution, especially when determining whether the output of a process is distributed approximately normally.This helpful data collection and analysis tool is considered one of the seven basic quality tools. It looks very much like a bar chart, but there are important differences between them. ![]() A histogram is the most commonly used graph to show frequency distributions. ![]() Try Plan-Do-Study-Act (PDSA) Plus QTools™ Training:Ī frequency distribution shows how often each different value in a set of data occurs.
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