Montgomery (1996) points out that a moving range chart should be interpreted with care because "the moving ranges are correlated, and this correlation may often induce a pattern or runs or cycles on ...

The previous example illustrates how you can create median and range charts using raw data (process measurements). However, in many applications, the data are provided as subgroup summary statistics.

As a business grows in size, it also grows in complexity – in terms of both the organization and the types of projects it undertakes. This increasing complexity makes it progressively more difficult ...

Charts are the most basic aspect of technical analysis. Chart is a graphical representation of the price action of an asset for analysis and decision making. It’s important for traders to understand ...