Question: SPC XL is a statistical add-in for Microsoft Excel, SPC XL provides statistical analysis including Control chart, Process capability, Histogram, and Pareto chart, a chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line, named after who?

full_context: Document 1: SigmaXL: SigmaXL is a graphical and statistical add-in tool for Microsoft Excel.
Document 2: Standard Predictor: The Standard Predictor (SP) is a set of measures of risk for abuse and violence developed in 2010 by Robert John Zagar and William M. Grove on a sample of 1,127 youth and 1,595 adults. These tests were validated on a sample of 236 teens and adults with 120 different occupations by Robert John Zagar in 2013. The Standard Predictor (SP) is a self-report set of true and false and multiple choice questions that can be administered to either teens or adults. The Standard Predictor (SP) correlates well with the Wechsler Intelligence Scale, the Vineland Social Maturity Scale, the Bender Visual Motor Gestalt Test, the Gates-MacGinitie Comprehension, Speed and Accuracy, and Vocabulary Tests and the Stanford Achievement Test. The Standard Predictor (SP) raw scores translate into a percentile of risk for abuse and violence for either an adolescent or an adult.
Document 3: Analyse-it: Analyse-it is a statistical analysis add-in for Microsoft Excel. Analyse-it is the successor to Astute, developed in 1992 for Excel 4 and the first statistical analysis add-in for Microsoft Excel. Analyse-it provides a range of standard parametric and non-parametric procedures, including Descriptive statistics, ANOVA, Mann–Whitney, Wilcoxon, chi-square, correlation, linear regression, logistic regression, polynomial regression and advanced model fitting, principal component analysis, and factor analysis.
Document 4: Filelight: Filelight is a KDE graphical disk usage analyzer, part of the KDE Utils package, which uses the sunburst chart technique to display disk usage. Instead of showing a tree view of the files within a partition or directory, or even a columns-represent-directories view like "xdiskusage", it shows a series of concentric pie charts representing the various directories within the requested partition or directory and the amount of space they use (this method being known as a sunburst chart, ring chart, or multilevel pie chart). A user may also click on the pie chart segment representing a particular directory, and repeat the analysis for that directory, right click that segment to open a file manager or terminal emulator in that location, or copy to clipboard or delete the directory, and they may right click the segment representing a file to open it, copy it to the clipboard, or delete it.
Document 5: NumXL: Numerical Analysis for Excel (NumXL) is an econometrics and time series analysis add-in for Microsoft Excel. Developed by Spider Financial, NumXL provides a wide variety of statistical and time series analysis techniques, including linear and nonlinear time series modeling, statistical tests and others.
Document 6: Line graph: In the mathematical discipline of graph theory, the line graph of an undirected graph "G" is another graph "L"("G") that represents the adjacencies between edges of "G". The name line graph comes from a paper by although both and used the construction before this. Other terms used for the line graph include the covering graph, the derivative, the edge-to-vertex dual, the conjugate, the representative graph, and the ϑ-obrazom, as well as the edge graph, the interchange graph, the adjoint graph, and the derived graph.
Document 7: Contract curve: In microeconomics, the contract curve is the set of points representing final allocations of two goods between two people that could occur as a result of mutually beneficial trading between those people given their initial allocations of the goods. All the points on this locus are Pareto efficient allocations, meaning that from any one of these points there is no reallocation that could make one of the people more satisfied with his or her allocation without making the other person less satisfied. The contract curve is the subset of the Pareto efficient points that could be reached by trading from the people's initial holdings of the two goods. It is drawn in the Edgeworth box diagram shown here, in which each person's allocation is measured vertically for one good and horizontally for the other good from that person's origin (point of zero allocation of both goods); one person's origin is the lower left corner of the Edgeworth box, and the other person's origin is the upper right corner of the box. The people's initial endowments (starting allocations of the two goods) are represented by a point in the diagram; the two people will trade goods with each other until no further mutually beneficial trades are possible. (Contrary to this claim neither the point of initial endowments, nor the contract curve is displayed in the actual diagram shown here.) The set of points that it is conceptually possible for them to stop at are the points on the contract curve.
Document 8: SPC XL: SPC XL is a statistical add-in for Microsoft Excel. SPC XL is a replacement for SPC KISS which was released in 1993 making it one of the oldest statistical addons to Excel. SPC XL provides statistical analysis including Control chart, Process capability, Histogram, Pareto chart, and ANOVA Gage R&R.
Document 9: Process capability index: In process improvement efforts, the process capability index or process capability ratio is a statistical measure of process capability: the ability of a process to produce output within specification limits. The concept of process capability only holds meaning for processes that are in a state of statistical control. Process capability indices measure how much "natural variation" a process experiences relative to its specification limits and allows different processes to be compared with respect to how well an organization controls them.
Document 10: Power Pivot: Power Pivot is a feature of Microsoft Excel. It is available as an add-in in Excel 2010 and 2013, and is included natively in Excel 2016. PowerPivot extends a local instance of Microsoft Analysis Services Tabular that is embedded directly into an Excel Workbook. This allows a user to build a ROLAP model in PowerPivot, and use pivot tables to explore the model once it is built. This allows Excel to act as a Self-Service BI platform, implementing professional expression languages to query the model and calculate advanced measures.
Document 11: Pareto chart: A Pareto chart, named after Vilfredo Pareto, is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.
Document 12: Pourbaix diagram: In electrochemistry, a Pourbaix diagram, also known as a potential/pH diagram, E-pH diagram or a pE/pH diagram, maps out possible stable (equilibrium) phases of an aqueous electrochemical system. Predominant ion boundaries are represented by lines. As such a Pourbaix diagram can be read much like a standard phase diagram with a different set of axes. Similarly to phase diagrams, they do not allow for reaction rate or kinetic effects.
Document 13: Bar chart: A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a line graph.
Document 14: CALPHAD: CALPHAD stands for "CALculation of PHAse Diagrams". An equilibrium phase diagram is usually a diagram with axes for temperature and composition of a chemical system. It shows the regions where substances or solutions (i.e. phases) are stable and regions where two or more of them coexist. Phase diagrams are a very powerful tool for predicting the state of a system under different conditions and were initially a graphical method to rationalize experimental information on states of equilibrium. The CALPHAD approach is based on the fact that a phase diagram is a manifestation of the equilibrium thermodynamic properties of the system, which are the sum of the properties of the individual phases. It is thus possible to calculate a phase diagram by first assessing the thermodynamic properties of all the phases in a system.
Document 15: Minitab: Minitab is a statistics package developed at the Pennsylvania State University by researchers Barbara F. Ryan, Thomas A. Ryan, Jr., and Brian L. Joiner in 1972. It began as a light version of OMNITAB, a statistical analysis program by NIST; the documentation for OMNITAB was last published 1986, and there has been no significant development since then.
ground_truth: Vilfredo Pareto