AP Bio - Unit 0: Scientific Processes

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what is science

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8 Terms

1

what is science

the study of natural phenomena

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2

scientific process

observation, scientific question, hypothesis, prediction, experiment, conclusion

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3

types of controls

negative, positive and baseline

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4

negative control

placebo. given “treatment” that doesnt actually have effect

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5

positive control

a different treatment that has the same effect as the tested treatment

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6

baseline control

tested group doesnt receive treatment for a short time

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7

Alternative hypothesis vs null hypothesis

Ha - a differnce between variables is anticipated

H0 - there will be no difference between observed and expected data

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8

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

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