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When conducting a experiment does the number of trials affect the results?
Besterbrook
The number of trials does not affect the result as each individual trial or experiment yields its own result caused by random small variations in the techniques used. What is affected is the conclusion derived from pooling all the individual results for the same type of trial and analysing the value obtained by statistical methods. It is generally reckoned that at least seven trials are required for the purpose of statistics and the analysis is commonly expressed as the Mean (average value) and Standard Deviation, (a number that reflects the extent of the variation between the individual trials). However, different statistical methods are used for analysing different types of data, the commonest reflecting the difference between parametric (the variation is the same on both sides of the mean) and non-parametric (The spread of variation is greater on one side of the mean than the other). Obviously a considerable number of individual trials is required to be able to make a valid distinction between the two.
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In a controlled experiment how do the number of trials and sample sizes effect the results?
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
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.
What does reliable in science terms mean?
How accurate data is in the sense that you've repeated an experiment a number of times. I.e., one would answer the question 'how reliable were your results?' with something like 'they were very reliable as the experiment was repeated 67 times'.
What part of an experiment is a variable?
It's something that you measure (called the dependent variable) or something that you change to see what happens (the independent variable). for example, if you were conducting an experiment to see how many monkeys you saw when you left bananas where you could see them, the independent variable might be the number of bananas you put out, and the dependent variable might be the number of moneys you see in a given amount of time. The variables are named that way because (assuming that the number of bananas and the number of monkeys is in fact related) the number of monkeys DEPENDS on the nmber of bananas, whereas you just decide how many bananas to use on a particular run of the experiment.
What is the independent variable in Todd's experiment?
There is no independent variable for the experiment described below, since there is no experiment described below.
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.
When conducting an experiment the minimum number of trails is what?
1
In a controlled experiment how do the number of trials and sample sizes effect the results?
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
Which experiment most likely has greater reliability?
D) Number 2 because the experiment was repeated and the results were always the same
What is the definition of idependent variable?
An independent variable is a part of an experiment that might change due to the outcome not being a desired result. The person conducting an experiment about how a medicine might affect a person, might change the number of people tested to gain more insight into the results. The independent variable in that situation would be the number of test subjects.
Does a daily dose of penicillin affect the number of bacteria in an experiment?
Yes
What is the experimental probability of rolling an even number?
The experimental probability of anything cannot be answered without doing it, because that is what experimental probability is - the probability that results from conducting an experiment, a posteri. This is different than theoretical probability, which can be computed a priori. For instance, the theoretical probability of rolling an even number is 3 in 6, or 1 in 2, or 0.5, but the experimental probability changes every time you run the experiment.
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.
What is the variables in this experiment the weight of the rider affect the number of sways does in the playground?
It's a pendulum. The length of the rope also influences the number of sways.
If i drop an ovulation test before i use it will it affect the results?
If you drop an ovulation test before you use it, it shouldn't affect the results at all. To be sure, you can call the number on the box for the company to ask them.
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
