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Science Definitions

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Questions	Answers
The variable (factor) you choose to change in an investigation.	Independent variable
The variable (factor) which you measure every time you change the value of the independent variable	Dependent variable
A variable (factor) which may affect the results of the investigation and therefore should be kept constant.	Controlled variable
The highest and lowest values of the independent variable. These should not be too big or too small.	Range
This is the smallest change in the quantity being measured by a measuring instrument that can be observed. For example ± 1 mm on a 1 metre ruler	Resolution
A measurement result is considered accurate if it is judged to be close to the true value	Accuracy
A value in a set of results which is seen to be much bigger or smaller than the rest of the values in the set	Anomaly