controlled sampling
121Nested case-control study — A nested case control study is a variation of a case cohort study in which only a subset of controls from the cohort are compared to the incident cases. In a case cohort study, all incident cases in the cohort are compared to a random subset of… …
122Kurzweil K2000 — Infobox synthesizer image caption = synth name = K2000 synth manufacturer = Kurzweil synthesis type = polyphony = 24 timbrality = oscillator = filter = attenuator = lfo = keyboard = 61 key mono pressure left control = Mod wheel, Pitch bend ext… …
123Partial correlation — In probability theory and statistics, partial correlation measures the degree of association between two random variables, with the effect of a set of controlling random variables removed. Contents 1 Formal definition 2 Computation 2.1 Using… …
124Completely randomized design — In the design of experiments, completely randomized designs are for studying the effects of one primary factor without the need to take other nuisance variables into account. This article describes completely randomized designs that have one… …
1252001 anthrax attacks — A letter sent to Senate Majority Leader Tom Daschle containing anthrax powder killed two postal workers Location New York …
126river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
127United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …
128Choice modelling — attempts to model the decision process of an individual or segment in a particular context. Choice modelling may also be used to estimate non market environmental benefits and costs[1]. Well specified choice models are sometimes able to predict… …
