size test
31Pearson's chi-squared test — (χ2) is the best known of several chi squared tests – statistical procedures whose results are evaluated by reference to the chi squared distribution. Its properties were first investigated by Karl Pearson in 1900.[1] In contexts where it is… …
32Gradation test — A gradation test, or sieve analysis, is a commonly used procedure in civil engineering that measures the size distribution, or gradation, of an aggregate, such as sand, crushed rock, or clay. A gradation test is performed on a sample of aggregate …
33Uniformly most powerful test — In statistical hypothesis testing, a uniformly most powerful (UMP) test is a hypothesis test which has the greatest power 1 eta among all possible tests of a given size α . For example, according to the Neyman Pearson lemma, the likelihood ratio …
34Chi-squared test — Chi square test is often shorthand for Pearson s chi square test. A chi square test, also referred to as chi squared test or χ2 test, is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi square… …
35Wald test — The Wald test is a statistical test, typically used to test whether an effect exists or not. In other words, it tests whether an independent variable has a statistically significant relationship with a dependent variable. Suppose an economist,… …
36Percolation test — A percolation test (from percolation , colloquially called a perc test) is a test to determine the absorption rate of soil for a septic drain field or leach field . The results of a percolation test are required to properly design a septic system …
372007 Chinese anti-satellite missile test — The 2007 Chinese anti satellite missile test was conducted by China on January 11, 2007. A Chinese weather satellite the FY 1C polar orbit satellite of the Fengyun series, at an altitude of convert|865|km|mi, with a mass of 750 kg [cite news |… …
38Slug test — A slug test is a particular type of aquifer test where water is quickly added or removed from a groundwater well, and the change in hydraulic head is monitored through time, to determine the near well aquifer characteristics. It is a method used… …
39Class-size reduction — As an education reform, the broad goal of class size reduction (CSR) is to increase the number of individualized student teacher interactions intended to improve student learning. A reform long holding theoretical attraction to many… …
40Cochran's C test — In statistics, Cochran s C test [1], named after William G. Cochran, is a one sided upper limit variance outlier test. The C test is used to decide if a single estimate of a variance (or a standard deviation) is significantly larger than a group… …
