![]() ![]() large enough differences, trends, patterns, unusual observations.). The Practical approach would deal with observing actual data (i.e. Let's say sales, which is not my expertise, but if I get the right people involved, which have this know-how and, sum up this with the Lean Six Sigma Methodology (the science of improvement), we can together develop improvements in the commercial area. For example, I could develop a process improvement in any area. The first, is based on our experience in the specific area we intend to improve. You can also use this in any data interpretation process and reduce the risk of misinterpretations. I couldn’t find the author of this method but, since I learned that during a Black Belt training in 2007, I have found it extremely useful in every improvement or innovation project. When we apply such a strategy, we are disciplining ourselves in merging our specific knowledge and the improvement science that, only together, lead us to actual improvements. The “P.G.A.” approach consists of three fundamental dimensions when we analyze data. That was not the case of the cited authors of the examples brought to this text but could be the case of many project leaders that apply the approach to be illustrated and may not have even been aware they were doing so. This can happen by chance in improvement projects, if you automatically use a method, not necessarily realizing that. approach.Īccording to, the quote above means “true art conceals the means by which it is achieved”. The “Boys Shoes” example from the same reference was used to illustrate a complete P.G.A.Confusion of correlation and causation example from Box and Hunter was used to present what can happen when Practical part of P.G.A.The Practical-Graphical-Analytical method is summarized and two classic examples are described to illustrate how it improves data analyses. ![]() “Ars est celaree artem” - Ovidio ( art to conceal art) More.How to apply the "P.G.A." approach and two classic examples on how to take advantage of this, although the authors of the examples didn't mention that. TLatex helper class used to compute the size of a portion of a formula. TLatex helper struct holding the attributes of a piece of text. are drawn using TLatex, the TMathText syntax can be used for them also. Therefore, as histograms' titles, axis titles, labels etc. "\" is given to TLatex then TMathText is automatically invoked. It uses plain TeX syntax and uses "\\" as control instead of "#". The class TMathText is a TeX math formulae interpreter. ![]() You may adjust the display of subscripts and superscripts by using the two functions SetIndiceSize(Double_t), which set relative size of subscripts and superscripts, and SetLimitIndiceSize(Int_t), which set limits for text resizing of subscripts and superscripts. These commands can be combined to make complicated subscript and superscript expressions. Subscripts and superscripts are made with the _ and ^ commands. When the font precision (see TAttText) is low (0 or 1), TLatex is painted as a normal TText, the control characters are not interpreted. The syntax is very similar to the Latex's one. TLatex's purpose is to write mathematical equations.
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