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11 Cards in this Set
- Front
- Back
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Design of Experiments (DOE) |
Experimental designs are used in science, industry and everyday life. We will use the single-factor design where you change one variable at a time and hold all other variables constant. This changed variable will be an independent variable |
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Important steps in a single factor design of experiments |
Hypothesis Independent variableDependent variableConstants/Control VariablesControl ExperimentRepeat Trials |
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Hypothesis |
A statement of a possible relationship between the independent and dependent variables. If…..then…..IT IS NEVER A QUESTIONNOT: What food will slugs prefer? It is: The slugs will prefer spinach to cabbage. |
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Independent variable |
The factor in an experiment that is changed on purpose.“I” the investigator control |
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Dependent variable |
The factor in an experiment that responds to the independent variable The purpose of the experiment |
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Dependent variable |
y axis |
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independent variable |
x axis |
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Constant/ Control Variable |
Any factor that is not allowed to change.Keep as many of these the same (because you only change 1 independent variable at a time) |
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Experimental Control |
A group or sample that is used as a standard for comparison |
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Qualitative |
Something observed that is not a mathematical number (color, relative size, smell, etc.) |
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Quantitative (# data) |
Measured in numbers- would have a unit (e.g. 3 g, 4 cm, 152.3 km) |
