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26 Cards in this Set
- Front
- Back
Prediction |
What you think will happen in an experiment. |
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Valid |
The results and conclusion will be this if the variables are correctly controlled. |
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Fair Test |
This is where only the independent variable is changed and everything else is controlled |
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Hypothesis |
A scientific statement that explains certain facts and observations.
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Interval |
The difference between the values of your independent variable. |
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Data |
Information or values that you collect |
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Datum |
One piece of information. |
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Systematic error |
An error that is always the same during a repeat- usually an error in equipment.
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Resolution |
The smallest change that can be read using a measuring device. |
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Repeatable |
If the same person can get the same reading using the same equipment and method. |
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Categoric Variable |
A variable that can be described using a label or category. E.g. color or surface. |
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Control Variable |
Variable that stays constant. Makes experiment valid.
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Independent Variable |
The variable that is changed during the experiment. Usually only one. |
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Continuous Variable |
A variable that can have a numerical value. |
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Dependent Variable |
The variable that changes due to a change in the independent variable. |
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Uncertainty |
The range around a true value. |
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Measurement Error |
The difference between the real value and measured value. |
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Anomaly |
Result that doesn't fit the pattern. |
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Random Error |
Error that causes measurements to be spread around the true value. |
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Zero Error |
When measuring equipment should read zero but doesn't. |
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Accuracy |
How close the reading is to the true value. |
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Precision |
This is determined by the scale on the measuring apparatus. |
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Calibration |
When we make sure that the measuring apparatus is making the correct readings. |
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True Value |
The real value of a measurement in an experiment. |
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Reproducible |
If another person can get the same results using the same equipment and method or different equipment/method. |
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Range |
The maximum and minimum values of the independent and dependent variable. |