AP Bio - Unit 0: Scientific Processes
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Last updated 6:18 PM on 3/28/23
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8 Terms
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what is science
the study of natural phenomena
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scientific process
observation, scientific question, hypothesis, prediction, experiment, conclusion
3
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types of controls
negative, positive and baseline
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negative control
placebo. given “treatment” that doesnt actually have effect
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positive control
a different treatment that has the same effect as the tested treatment
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baseline control
tested group doesnt receive treatment for a short time
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Alternative hypothesis vs null hypothesis
Ha - a differnce between variables is anticipated
H0 - there will be no difference between observed and expected data
H0 - there will be no difference between observed and expected data
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Chi Squared Equation
χ^2= ∑((O-E)^2/E)
O = observed data
E = expected data
if result in less than or equal to the p-value, accept the null hypothesis
O = observed data
E = expected data
if result in less than or equal to the p-value, accept the null hypothesis
