Search results for keyword: variance
alpha coefficient
alpha coefficient
The alpha coefficient, also known as the “Cronbach’s alpha” or the “internal consistency coefficient” is a statistical tool used in psychometrics to measure the reliability of a psychological test. This coefficient is widely-used in the study of psychological measurement an......
03/07/2023 
1037 
Sophia
Project cost management
Project Cost Management
Project cost management is the practice of controlling and monitoring project expenses in order to ensure that the project is executed within its proposed budget. A project manager needs to determine what their budget is, who will pay for the various expenses, and how to m......
arbitrage pricing theory
Arbitrage Pricing Theory
Introduction
Arbitrage pricing theory (APT) is an economic theory that suggests that the expected rate of return of a given asset can be predicted by the application of a few key factors. The theory states that the risk of an asset can be explained by the impact of certa......
HO theorem
This article is a summary of the proof of the Ky Fan Theorem. In the article, we will look at the history and background of the theorem, the statement of the theorem and its proof.
The Ky Fan Theorem was developed by the mathematician Ky Fan in 1954. He proved that any reasonable measure can be ......
PPI
Purchasing power parity (PPP) is an economic theory which states that the exchange rate between two countries should be equal to the ratio of their respective purchasing power. It is used to measure the relative cost of goods and services in different countries. The idea behind PPP is that in an i......
Roberzinski's theorem
Kolmogorov-Smirnov Test
The Kolmogorov-Smirnov test is a widely used, non-parametric statistical test for assessing whether two data sets come from a single population or from different populations. The name of the test arose from the surnames of its creators, Russian mathematician Andrey Kolmogo......
Binary Contrast Coefficient
Dyadic Contrast Coefficient
In statistical computing, the dyadic contrast coefficient (DCC) is used to measure the similarity between two or more sets of data, typically measurements of a target variable made under different conditions or subjects. The coefficient is computed by dividing the diff......
Comparison table of chemical composition of some stainless steels in China, Japan and the United States
Chemical Composition of Austenitic Stainless Steel in China, Japan and the United States
Stainless steel, an alloy of iron, chromium and other metals, is a popular material for construction due to its high strength, resistance to corrosion and ease of maintenance. Austenitic stainless steel is a ......
C curve
The Beta Distribution Curve or Beta-C curve provides a different way of visualizing project survival probability depending on the estimated cost. Many times, the Beta-C curve is used to compare the estimated cost of a project with realistic costs projected from other sources. This curve can help t......
Kendall coefficient of harmony
Kendall’s Concordance Coefficient
Introduction
Kendall’s Concordance Coefficient is a measure of how two variables correlate, or correspond, with each other. It was developed by Maurice Kendall in 1950 and has been widely used in psychology, meteorology, and other statistical fields. Kendall’......
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