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11 Cards in this Set
- Front
- Back
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Observation |
what is seen or measured |
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Inference |
a conclusion based on observation or evidence |
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Hypothesis |
an untested prediction, a good hypothesis states both a cause and effect (if-then statement ) |
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Theory |
a broad explantation of natural events supported by strong evidence |
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controlled experiment |
compares the results of an experiment between two or more groups |
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experimental group |
group being tested or receiving the treatment |
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control group |
normal group, identical in all aways to the experimental group except that they do no receive the treatment |
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placebo |
a sugar pill, or other fake treatment that is given to the control group so subject do not know what group they are in |
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independent variable |
variable that is being tested plotted on x axis independent; it can do what it wants, doesn't have to rely on any other variables |
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dependent variable |
variable that is measured at the end of an experiment the results are based on the independent variable (Did you or did you not get the treatment? plotted on y axis |
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Characteristics of a good experiment (7) |
can be repeated and get the same results large sample size are performed over long periods of time only one variable tested peer reviewed allowed to be wrong
is objective and unbiased |
