experimento irregular

English translation: non-randomized experiment

10:16 Dec 26, 2019
Spanish to English translations [PRO]
Science - Mathematics & Statistics
Spanish term or phrase: experimento irregular
This is a section of a maths text for ESO 1, the last and hardest section, on probability theory and probabilistic experiments. I can't find anything similar in English. I suspect there may be a word that is not generally attached to experiment to describe this kind of thing. I've found one (fair/unfair), but it doesn't really work with the text. Need some other inputs and perspectives, please.

Castilian Spanish to UK English
TIA!!


ORIG
Hay experimentos regulares como lanzar un dado, en los que se puede calcular la probabilidad de que salga una cara sin necesidad de experimentar. Por otro lado, hay experimentos irregulares, como lanzar una chincheta, en los que no queda más remedio que experimentar para calcular la probabilidad de que caiga con la punta hacia arriba ya que ambas no tienen la misma probabilidad.
S Ben Price
Spain
Local time: 11:53
English translation:non-randomized experiment
Explanation:
In the statistical theory of design of experiments, randomization involves randomly allocating the experimental units across the treatment groups. For example, if an experiment compares a new drug against a standard drug, then the patients should be allocated to either the new drug or to the standard drug control using randomization.


https://en.wikipedia.org/wiki/Randomized_experiment
Selected response from:

Francois Boye
United States
Local time: 06:53
Grading comment
4 KudoZ points were awarded for this answer



Summary of answers provided
4biased/loaded experiment
philgoddard
4non-randomized experiment
Francois Boye


  

Answers


5 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
biased/loaded experiment


Explanation:
If you're using a completely regular die, there will be a one in six chance of its falling on any one face. As soon as it becomes irregular, for example by being heavier on one side, the experiment becomes biased.

A drawing pin/thumbtack is an extremely irregular "die", and heavily loaded or biased. The only way you can calculate the probability of its falling with the point up is to throw it lots of times.

If I'm given the outcome of a number of dice rolls (say, 5 twos, 8 threes, etc), is there a way to assign a probability that the dice are biased or unbiased?
http://math.stackexchange.com/questions/267946/how-can-i-tel...

Probability with loaded and fair dice
http://math.stackexchange.com/questions/2137754/probability-...
(When you found "fair" you were in the right track, but I'm not sure an experiment can be fair or unfair.)

philgoddard
United States
Native speaker of: English
PRO pts in category: 43
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1 day 16 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
non-randomized experiment


Explanation:
In the statistical theory of design of experiments, randomization involves randomly allocating the experimental units across the treatment groups. For example, if an experiment compares a new drug against a standard drug, then the patients should be allocated to either the new drug or to the standard drug control using randomization.


https://en.wikipedia.org/wiki/Randomized_experiment

Francois Boye
United States
Local time: 06:53
Specializes in field
Native speaker of: Native in FrenchFrench
PRO pts in category: 72
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