randomization

Definition von randomization im Englisch Englisch wörterbuch: Participants are assigned by chance, often by a computer, either to receive the study agent (intervention group) or not (control group); The process of assigning trial subjects to treatment or control groups using an element of chance to determine the assignments in order to reduce bias return to contents; Randomization (in scientific experiments) provides data observations that are independently distributed, as required for the valid application of statistical methods By random allocation of experimental units and the sequence in which trials are conducted: (1) effects of extraneous factors are averaged out; (2) experimenter bias is removed The use of controls can help varify randomization; The process of selection done in a way so that there is no predictable or specific pattern In a research study, the assignment of volunteers to one test group or another is randomized to eliminate the possibility that the results will be influenced to factors not measured in the study In the MOMS the chances of being in either the prenatal or postnatal surgery groups is 50%, the same odds as getting a heads or tails when flipping a coin; A technique of assigning patients to treatment and control groups that is based only on chance distribution It is used to diminish patient selection bias in clinical trials Proper randomization of patients is an indifferent yet objective technique that tends to neutralize patient prognostic factors by spreading them evenly among treatment and control groups Randomized assignment is often based on computer-generated tables of random numbers; The process of making random; The process of distributing schedule start times for different clients within a specified percentage of the schedule's startup window; Assignment of subjects to different treatments, interventions or conditions according to chance rather than systematically (e g , as dictated by the standard or usual response to their condition, history, or prognosis, or according to demographic characteristics); A technique which gives every patient an equal chance of winding up in any particular arm of a controlled clinical trial; Ideally, a process that ensures every member of a population has an equal chance to be included in the study's sample This is often not possible Cardiologist at MUSC can not select study patients from all patients with unstable angina, only those who are admitted to MUSC More importantly, randomization means that study patients are assigned to treatment or placebo groups for the experiment, without regard to any patient characteristics or study personnel desires or biases; the arrangement of a set of objects in a random order, a set of treatments applied to a set of experimental units is said to be randomized when the treatment applied to any given unit is chosen at random from those available and not already allocated; There may be several different treatments being compared in a clinical trial; to avoid any unfair concentration on any particular treatment, patients are assigned treatments at random by a computer; allows unbiased estimates to be made of sample statistics such as the sample means Experimental units, e g animals, test-tubes etc , should be assigned to treatments at random It may also be necessary to apply treatments at random, i e not in the same sequence; The percentage of the startup window that the server can use to randomize start times for different client nodes associated with a schedule; A schedule for allocating treatment material and for conducting treatment combinations in a DOE such that the conditions in one run neither depend on the conditions of the previous run nor predict the conditions in the subsequent runs Note: The importance of randomization cannot be over stressed Randomization is necessary for conclusions drawn from the experiment to be correct, unambiguous and defensible; a procedure in which the assignment of subjects and treatments to groups is based on chance Randomization ensures control over the extraneous variables and increases the reliability of the experiment; {i} process of making random, process of making haphazard (also randomisation); a deliberately haphazard arrangement of observations so as to simulate chance; The use of probability sampling to assign subjects to experimental and control groups ratio scale: A measurement of a variable that results in the classification of phenomena into a set of attributes This scale is characterized by an absolute zero point as well as equal distance between attributes research triangulation: The use of multiple methods of investigation The assumption for use of this method is that any bias inherent in the study would be neutralized in conjunction with other data sources and collection procedures There are two types
random: Apropos of nothing; lacking context; unexpected; having apparent lack of plan, cause, or reason
The narrative takes a random course.
random: The full range of a bullet or other projectile; hence, the angle at which a weapon is tilted to allow the greatest range
Fortie yards will they shoot levell, or very neare the marke, and 120 is their best at Random.
random: Characterized by or often saying random things; habitually using non sequiturs
You're so random!.
random: Of or relating to probability distribution
A toss of loaded dice is still random, though biased.
random: Speed, full speed; impetuosity, force
And therwith two of them dressid their sperys, and Ulfyus and Brastias dressid theire speres, and ranne to gyder with grete raundon.
random: Pseudorandom in contrast to truly random; mimicking the result of random selection
The rand function generates a random number from a seed.
random: Having unpredictable outcomes and, in the ideal case, all outcomes equally probable; resulting from such selection; lacking statistical correlation
The results of the field survey look random by several different measures.
random: Representative and undistinguished; typical and average; selected for no particular reason
A random American off the street couldn't tell the difference.
randomisation: Alternative spelling of randomization
Random: spontaneous
Random: randon
random: The direction of a rake- vein
random: Prince, later King of Amber, son of Oberon R was chosen to the throne by the Unicorn on the field of the battle of the Courts of Chaos
random: A random sample is one whose value does not appear to depend on the previous sample's value, or on anything else A series of random samples sounds like white noise
random: taken haphazardly; "a random choice
random: Distance to which a missile is cast; range; reach; as, the random of a rifle ball
random: 2. If you describe events as random, you mean that they do not seem to follow a definite plan or pattern. random violence against innocent victims + randomly ran·dom·ly drinks and magazines left scattered randomly around
random: Eluding precise prediction, completely irregular Compare stochastic
random: By chance
random: If something happens at random, it happens without a definite plan or pattern. Three black people were killed by shots fired at random from a minibus. adj. random access memory Random House random variable
random: Apropos of nothing; lacking context; unexpected; having apparent lack of plan, cause or reason
random: Term applied to ranges beyond point-blank, or to firing at such ranges Accuracy -- a relative term at best -- of smoothbore artillery began to drop off sharply as a gun was elevated and could not be predicted with anything like certainty except in such leisurely circumstances as siege or garrison work, hence the very literal use of the word random in references to shooting at longer ranges Because of this loss of accuracy, most gun carriages of this time did not permit more than a few degrees of elevation; howitzer carriages permitted somewhat more
random: An undefined, unknown or unimportant person; a person of no consequence
random: A roving motion; course without definite direction; want of direction, rule, or method; hazard; chance; commonly used in the phrase at random, that is, without a settled point of direction; at hazard
random: without order or apparent reason Sometimes the police patrol van comes past every hour so you can predict when they will be around, but in other places they seem to patrol at random, and so you never know if the cops will show up while you are busy If you chose a number at random between 0 and 1, the chance is 1 in 4 that it will be less than 0 25
random: Eluding precise prediction, completely irregular
random: lacking any definite plan or order or purpose; governed by or depending on chance; "a random choice"; "bombs fell at random"; "random movements" taken haphazardly; "a random choice
random: Returns a random number in the range of the two numbers The returned value will be greater than or equal to the first number, and less than or equal to the second number
random: A random sample or method is one in which all the people or things involved have an equal chance of being chosen. The survey used a random sample of two thousand people across England and Wales The competitors will be subject to random drug testing. + randomly ran·dom·ly interviews with a randomly selected sample of thirty girls aged between 13 and
random: n –ness adj When events or players’ actions in a game are very unpredictable Often players will have little, if any, control over the elements that control their performance in the game (See also luck)
random: A remarkably tricky term, far too much so for me to attempt a definition here Quite a few cryptosystems have been broken via attacks on weak random number generators, even when the rest of the system was sound See RFC 1750 for the theory It will be available locally if you have downloaded our RFC bundle (which is described here) Or read it on the net See the manual pages for ipsec_ranbits(8) and random(4) for details of what we use There has recently been discussion on several mailing lists of the limitations of Linux /dev/random and of whether we are using it correctly Those discussions are archived on the /dev/random support page
random: taken haphazardly; "a random choice"
random: Pertaining to a process or variable whose outcome or value depends on chance or on a process that simulates chance, often with the implication that all possible outcomes or values have an equal probability of occurrence; for example, the outcome of flipping a coin or executing a computer-programmed random number generator
random: If you choose people or things at random, you do not use any particular method, so they all have an equal chance of being chosen. We received several answers, and we picked one at random
random: (nit)wit
random: chance; having no discernible pattern
random: A way to choose a sample that represents all the people we want to reach (in political polling, that's usually likely voters) A sample is random if each member of the population has an equal chance of being represented
random: Going at random or by chance; done or made at hazard, or without settled direction, aim, or purpose; hazarded without previous calculation; left to chance; haphazard; as, a random guess
random: Force; violence
random: {s} chance, fortuitous, accidental, unplanned
random: accidentally, by chance, fortuitously, without prior planning
random: A random refers to a random event, which takes the form of a spell, except for the newer "barbarians " I've compiled a list of randoms and their accompanying message in news, though the actual effects of the specific spell are slight, e g a random fire will destroy several buildings, but nowhere near the scale of an actual Fire spell These messages vary from those of obscured spells for the most part, so the message will generally tell you if a spell is hostile or a random if you're unsure The primary affect of most randoms is dropping morale to 1%, which can be devastating to a kingdom that has trouble supporting itself under normal conditions All randoms are instant and cannot be dispelled
random: A function that is affected by no input or state and whose output cannot be anticipated Currently, only quantum effects (e g , electron tunneling across a (thermally compensated) diode junction) qualify For a binary random variable, the odds of the next output value being zero or one are always 50/50 -- notably independent of previous output values or the current environment (temperature, voltage, etc )
random: (x) numeric used to create a random number (in the range 0 x-1) Usually used in assignment statements like: dice : = random(6)+1
random: (at random: by chance, without thinking about or planning the events)
random: lacking a definite plan, purpose or pattern; due to chance
random: based strictly on a chance mechanism, with negligible deterministic effects
random: All outcomes being unpredictable and, in the ideal, equally probable; resulting from such selection; lacking statistical correlation
random: Representative and undistinguished; typical and average
random: the assignment of treatments to experimental units, or the selection of samples, such that all units or samples have an equal chance of receiving the treatment being estimated It serves to assure unbiased estimates of treatment means and experimental error
random: by chance, like the flip of a coin
random: lacking any definite plan or order or purpose; governed by or depending on chance; "a random choice"; "bombs fell at random"; "random movements"
random: Not in an order Refers to the data i e , files stored on a disk
random: Process or event that occurs by chance
randomisation: a deliberately haphazard arrangement of observations so as to simulate chance
randomisation: Introduced by R A Fisher in 1926 so that inferential statistics could be carried out to analyse differences between groups of subjects
randomisation: allocation of individuals to groups, eg for experimental and control regimens, by chance, in order to make groups similar at the start of an investigation The randomisation process may or may not consider particular characteristics of the subject being entered
randomisation: (Cochrane definition) Method used to generate a random allocation sequence, such as using tables of random numbers or computer-generated random sequences The method of randomisation should be distinguished from concealment of allocation because of the risk of selected bias, despite the use of randomisation, if there is not adequate allocation concealment For instance, a list of random numbers may be used to randomise participants, but, it the list is open to the individuals responsible for recruiting and allocating participants, those individuals can influence the allocation process, either knowingly or unknowingly
randomisation: {i} process of making random, process of making haphazard (also randomization)
randomisation: Procedure to ensure that every member of a target population has an equal chance of inclusion in a sample Ideally, each member of the population of interest would be assigned a number and then the sample to be used in the experiment would be randomly chosen based on these numbers This is unlikely to happen but it is good practice that once the sample is identified for testing, they are then randomly allocated to the different conditions in the experiment If for some reason your initial sample of the population of interest is biased (maybe you chose people who are particularly tolerant to alcohol), then the idea is that these individuals are equally distributed throughout your conditions and as such will not bias the group comparisons