Microsoft Excel 2007 supports a variety of chart types to create a combination chart and help your viewers see the differences between two or more data series. For example, one data series in a ...

When you are working with subgrouped data, it can be helpful to accompany a cusum chart for means with a Shewhart s chart for monitoring the variability of the process. This example creates this ...

1999: A disaster investigation board reports that NASA’s Mars Climate Orbiter burned up in the Martian atmosphere because engineers failed to convert units from English to metric. Mars Photo ...