mean-unbiased estimate
81Moderation (statistics) — In statistics, moderation occurs when the relationship between two variables depends on a third variable. The third variable is referred to as the moderator variable or simply the moderator [1]. The effect of a moderating variable is… …
82Cronbach's alpha — Cronbach s α (alpha)[1] is a coefficient of reliability. It is commonly used as a measure of the internal consistency or reliability of a psychometric test score for a sample of examinees. It was first named alpha by Lee Cronbach in 1951, as he… …
83Rasch model estimation — Various techniques are employed in order to estimate parameters of the Rasch model from matrices of response data. The most common approaches are methods of maximum likelihood estimation, such as joint and conditional maximum likelihood… …
84Regression discontinuity — In the design of experiments, regression discontinuity (RD) designs are designs that evaluate causal effects of interventions, in which assignment to a treatment is determined at least partly by the value of an observed covariate lying on either… …
85Mohammed and Mohammedanism — Mohammed and Mohammedanism † Catholic Encyclopedia ► Mohammed and Mohammedanism I. THE FOUNDER Mohammed, the Praised One , the prophet of Islam ( see Islam (Concept) ) and the founder of Mohammedanism, was born at Mecca (20… …
86Islam — Mohammed and Mohammedanism † Catholic Encyclopedia ► Mohammed and Mohammedanism I. THE FOUNDER Mohammed, the Praised One , the prophet of Islam ( see Islam (Concept) ) and the founder of Mohammedanism, was born at Mecca (20… …
87Mohammed and Mohammedanism (Islam) — Mohammed and Mohammedanism † Catholic Encyclopedia ► Mohammed and Mohammedanism I. THE FOUNDER Mohammed, the Praised One , the prophet of Islam ( see Islam (Concept) ) and the founder of Mohammedanism, was born at Mecc …
88sample standard deviation — an estimate of the population standard deviation, usually determined (from a sample of size n) by dividing the sum of the squared deviations from the sample mean by n−1 and taking the square root; n−1 is used (rather than n) in order… …
89Confidence region — In statistics, a confidence region is a multi dimensional generalization of a confidence interval. It is a set of points in an n dimensional space, often represented as an ellipsoid around a point which is an estimated solution to a problem,… …
90Variance swap — A variance swap is an over the counter financial derivative that allows one to speculate on or hedge risks associated with the magnitude of movement, i.e. volatility, of some underlying product, like an exchange rate, interest rate, or stock… …
