By Frederick Ruland (auth.), Prof. Teresa Kowalczyk, Prof. Elżbieta Pleszczyńska, Dr. Frederick Ruland (eds.)

This e-book presents a brand new grade method for clever facts research. It introduces a selected infrastructure of techniques had to describe information research types and techniques. This monograph is the single ebook shortly to be had overlaying either the speculation and alertness of grade info research and hence aiming either at researchers, scholars, in addition to utilized practitioners. The textual content is richly illustrated via examples and case reviews and contains a brief advent to software program enforcing grade tools, which are downloaded from the editors.

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Additional resources for Grade Models and Methods for Data Analysis: With Applications for the Analysis of Data Populations

Example text

The total), 100 percent of the gas is uniformly distributed in 100 percent of the cylinder space. We draw a line from the coordinates (0,0) to (1,1), which represents the cumulative proportion of gas as we go from left to right in the cylinder. We have 100 percent of the gas, in 100 percent of the cylinder (one cell). Our diagonal line represents the concentration curve of the gas amount with respect to the cylinder space. It has a slope of 1 at each position in the cylinder. The diagonal we have drawn is also the graph of the cumulative distribution function for, in this case, the gas amount, as well as of cylinder space.

Concentration curve for the distribution of spending for country A relative to country B. 1. , the slopes are ordered from small to large). When plotted in this ordered fashion a convex curve is produced. Comment: Reordering, depending upon the specific subject area context, is a kind of "prioritizing" of the categories. 26 F. Ruland Note: We have also included a diagonal in the figure. , as a reference) the concentration curve of two identical distributions. , between country A and country B).

The starting point of each successive sloping line segment is the ending point of the previous line. , the maximal concentration index value). This index is a numerical measure of the distributional concentration. 13. However, it is worth commenting on the segment for the luxury model category. 96 or just slightly smaller than 1. This makes the line almost parallel to the diagonal which has a slope of 1. Therefore the proportion of luxury models purchased before 1979 is approximately the same as the proportion purchased in 1979.