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The number of trials and sample sizes generally increase the accuracy of the results because you can take the average or most common results in the experiment

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Q: In a controlled experiment how do the number of trials and sample sizes effect the results?
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Which experiment most likely has greater reliability?

D) Number 2 because the experiment was repeated and the results were always the same


What occurs when conducting a probability experiment?

An experiment is carried out repeatedly. The total number of times the experiment is conducted and the number of times in which the results are outcomes of interest are recorded. These counts are then used to calculate the experimental probabilities of the outcomes.


What is an controlled experiment?

A controlled experiment can be used to test almost anything. In a controlled experiment, the scientist (or experimenter) use a control group and an experimental group. The control group has nothing changed about it, and experiment group is changed based on the variable of the experiment. One of the most common uses of controlled experiments is the testing of new medications. In a medical study, a pharmaceutical company usually brings in a group of 100 people. Those people people are randomly assigned to two groups of 50. The experiment group is given the medication being tested, and the control group is given a placebo (a sugar pill). After several weeks, the experimenter can then see the side-effects of the medication, by comparing the differences between the experiment and control groups.


How many controlled variables must a controlled experiment contain to be valid?

Every variable except for the one being tested should be controlled.


How do scientist test the result of their experiment?

Repitition is one common way to verify the results of scientific experiment. In many cases, other scientists in the same field will attempt to duplicate a published experiment and can detect fraudulent or questionable results if they are unable to reproduce similar results after a number of tries. On the other hand, successful duplication will usually verify the original experimenter's conclusions.


In an experiment to test the effect of excercise on the number of times a clothespin can be squeezed in 1 minute what is the dependent variable?

a single variable


Why most only one variable change in an experiment?

That is simply not true.There are times when a number of factors can have an effect on the outcome of an experiment but it is not possible to conduct the experiment so that only one factor is allowed to vary while all others are controlled. It is far more efficient - in terms of experimental units - to design the experiment so that the interactions between variable factors can be estimated. Experimental design is the subject that deals with the problem of designing efficient schema for dealing with a number of interacting factors. You may wish to look at "Latin square design" and "Greco-Latin squares" as an introduction to design.


What controlled variables in science?

The number of dependent variables in an experiment varies, but there is often more than one. experiments also have controlled variables are quantities that a scientist wants to remain constant, and he must be observe them as carefully as the dependent variables.


Which procedure must be followed for the results of an experiment to be considered valid?

A valid experiment is the one which is done on the basis of some facts and figures. The experiment which has a good statistical analysis is known to be valid experiment.step 3.


It was hypothesized that there is a maximum number of worms that can survive under the conditions of bin 1 Is this hypothesis supported by the results of the experiment?

Yes Because the number of worms remained constant in bin 1


How do you determine the number of outcome in an experiment?

How to determine the number of outcome in an experiment ?


What would be misleading about an experiment with a small number of trials?

There need not be anything misleading about it. If the number of trials are stated clearly there is nothing misleading about it. The results will not be as reliable as they would have been with a larger number of trials but that will always be the case.