It necessary when performing an experiment that a large quantity of tests and trials are performed because observations tend to have errors. There are random errors, which are errors in measurement, and there are systematic errors, which are errors in procedure or calibration. Both have to be considered. Performing the experiment more than once allows one to estimate the varience of the results, to reject erroneous results, and to more accurately describe how the results fit the theory.
A large sample size is pivotal to a successful experiment. A small sample size does not permit the ability to find noteworthy changes in traits. Additional, the sample must be large enough to account for any data irregularities that may occur.
so the results will not be random and will actually be consistent.
Genetics are based on probabilities. The larger the sample size, the more likely the results will conform to probabilities.
so you can have have faith in your results
to ensure stability
to be more confident with the answer
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a vector quantity has both direction (sign) and magnitude like displacement towards right or left (direction) and has a certain value (magnitude)
An experiment is a simulation of complete or part of a real scenario in a controlled environment. We come to know of various outcomes of an experiment based on the values/degree of the variables in different quantity/quality. Unless the variables are controlled, experiment can go out of hand and sometimes become a real disaster.
derived quantity
The responding variable is the one variable that changes as a result of altering the manipulating variables. In an experiment, different conditions of the responding variable can be observed, such as quantity, quality, time, distance and height. Read more: What Does "Responding Variable" Mean? | eHow.com http://www.ehow.com/facts_7190954__responding-variable_-mean_.html#ixzz1Aa8rlLQT
Concentration
Magnitude and direction
control
If you vary only one quantity in an experiment, then the results will be related to that quantity. If you vary two or more quantities, then the results will be ambiguous; you will not know what variation is responsible for the observed result.
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Robert Milliken
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Ø In chemistry, algebra can be used to calculate the quantity of a substance required in an experiment. Also, it is used to calculate the quantity of various substances formed in an experiment. Problems of Mole concept are soved on this basis only.
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accurate values of the quantity that you wanna measure using certain properties of it.
A magnitude and a direction.They're the two fundamental measurements in a vector quantity.
Unknown, we have not the necessary quantity to test the sound !