quasi-random sampling - traduction vers russe
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quasi-random sampling - traduction vers russe

PROCESS INVOLVING CHANCE USED IN RESEARCH FOR ALLOCATING EXPERIMENTAL SUBJECTS TO GROUPS
Random placement; Randomized assignment; Quasi-randomisation; Quasi-randomization

quasi-random sampling      

общая лексика

квазислучайный выбор

random placement         

математика

случайное размещение

statistical sampling         
  • A visual representation of selecting a random sample using the cluster sampling technique
  • A visual representation of selecting a random sample using the stratified sampling technique
  • A visual representation of selecting a random sample using the systematic sampling technique
SELECTION OF DATA POINTS IN STATISTICS
Sample (statistics); Statistical sampling; Sample survey; Random sampling; Random sample; Statistical sample; Sampling method; Sample population; Sample poppulation; Sampling (mathematics); Random allocation; Sample set; Representative sample; Sampling methods; Sample (probability); Sampling technique; Probability sample; Sampling techiques; Sampling techniques; Probability sampling; Sampling plan; Random sampling with replacement; Sampling (A level business); Random selection; Statistical Sample; Randomly selected; Unbiased sampling; Sampling Theory; Sampling scheme; Sample group; Data sample; Data sampling; N (statistics); With replacement; Without replacement; Double Labelling Experiment; Applications of statistical sampling; Random samples; Sample Surveys

математика

розыгрыш

Définition

Nyquist Theorem
<communications> A theorem stating that when an analogue waveform is digitised, only the frequencies in the waveform below half the sampling frequency will be recorded. In order to reconstruct (interpolate) a signal from a sequence of samples, sufficient samples must be recorded to capture the peaks and troughs of the original waveform. If a waveform is sampled at less than twice its frequency the reconstructed waveform will effectively contribute only noise. This phenomenon is called "aliasing" (the high frequencies are "under an alias"). This is why the best digital audio is sampled at 44,000 Hz - twice the average upper limit of human hearing. The Nyquist Theorem is not specific to digitised signals (represented by discrete amplitude levels) but applies to any sampled signal (represented by discrete time values), not just sound. {Nyquist (http://geocities.com/bioelectrochemistry/nyquist.htm)} (the man, somewhat inaccurate). (2003-10-21)

Wikipédia

Random assignment

Random assignment or random placement is an experimental technique for assigning human participants or animal subjects to different groups in an experiment (e.g., a treatment group versus a control group) using randomization, such as by a chance procedure (e.g., flipping a coin) or a random number generator. This ensures that each participant or subject has an equal chance of being placed in any group. Random assignment of participants helps to ensure that any differences between and within the groups are not systematic at the outset of the experiment. Thus, any differences between groups recorded at the end of the experiment can be more confidently attributed to the experimental procedures or treatment.

Random assignment, blinding, and controlling are key aspects of the design of experiments because they help ensure that the results are not spurious or deceptive via confounding. This is why randomized controlled trials are vital in clinical research, especially ones that can be double-blinded and placebo-controlled.

Mathematically, there are distinctions between randomization, pseudorandomization, and quasirandomization, as well as between random number generators and pseudorandom number generators. How much these differences matter in experiments (such as clinical trials) is a matter of trial design and statistical rigor, which affect evidence grading. Studies done with pseudo- or quasirandomization are usually given nearly the same weight as those with true randomization but are viewed with a bit more caution.

Traduction de &#39quasi-random sampling&#39 en Russe