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2. Pareto chart - Wikipedia

   en.wikipedia.org/wiki/Pareto_chart

   The Pareto Chart demonstrates a power law relationship between the rank of a quality issue and that issue’s contribution to cost. This means one can find a linear relationship on a log-log plot. The purpose of the Pareto chart is to highlight the most important among a (typically large) set of factors. In quality control, Pareto charts are ...

3. Multiple comparisons problem - Wikipedia

   en.wikipedia.org/wiki/Multiple_comparisons_problem

   Multiple comparisons problem. An example of coincidence produced by data dredging (uncorrected multiple comparisons) showing a correlation between the number of letters in a spelling bee's winning word and the number of people in the United States killed by venomous spiders. Given a large enough pool of variables for the same time period, it is ...

4. Pareto principle - Wikipedia

   en.wikipedia.org/wiki/Pareto_principle

   Add a cumulative percentage column to the table, then plot the information; Plot (#1) a curve with causes on x- and cumulative percentage on y-axis; Plot (#2) a bar graph with causes on x- and percent frequency on y-axis; Draw a horizontal dotted line at 80% from the y-axis to intersect the curve.

5. Mathematical optimization - Wikipedia

   en.wikipedia.org/wiki/Mathematical_optimization

   An optimization problem with discrete variables is known as a discrete optimization, in which an object such as an integer, permutation or graph must be found from a countable set. A problem with continuous variables is known as a continuous optimization , in which optimal arguments from a continuous set must be found.

6. Regression analysis - Wikipedia

   en.wikipedia.org/wiki/Regression_analysis

   t. e. In statistical modeling, regression analysis is a set of statistical processes for estimating the relationships between a dependent variable (often called the 'outcome' or 'response' variable, or a 'label' in machine learning parlance) and one or more independent variables (often called 'predictors', 'covariates', 'explanatory variables ...

7. Relative change - Wikipedia

   en.wikipedia.org/wiki/Relative_change

   A percentage change is a way to express a change in a variable. It represents the relative change between the old value and the new one. For example, if a house is worth $100,000 today and the year after its value goes up to $110,000, the percentage change of its value can be expressed as = = %.