We can easily determine the value that occurred most frequently during the time frame. The histogram can be viewed as a summary of information over a certain time frame in this example, the time frame is one month. They took 15 days to arrive 16 times during the month. For example, orders took 13 days to arrive 10 times during the month. The number of times this value occurred (number or frequency of occurrences) during the month is given on the y (vertical) axis. The number of days required for an order to arrive is given on the x (horizontal) axis. The histogram includes data collected over a one-month period (the time frame or “history”). This histogram displays the number of days it takes for a supplier to deliver an order. The figure above shows a completed histogram. Below is a brief review of the material covered in last month’s e-zine.
