Sept.3 - -Other characteristics about science o A...

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Web quiz available today until Sunday at midnight. - Technology: creation and use of technical means based on science. - Science: The observation, identification, description, experimental investigation, and theoretical explanation of natural phenomenon. - Scientific method: o Discovery science – build knowledge through large number of observation (induction) Ex. Climate pattern, Astronomy, Genome projects, Cell Structures o Hypothesis-based science – from general to specific knowledge (deduction) Ex. Peppered moth study of Kettlewell (example of deductive science) Two color forms exist: light and melanic (dark) Light colored lichen disappeared from bark, and bark darkened through pollution. Observation Inductive reasoning Hypothesis - more light-colored form before 1850 - more black form in 1950 - tree barks darkedned due to lichen - loss and soot accumulation Explanatory system (existing knowledge; established facts) - many birds use visual cure to search for food - crypsis reduces predation
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Unformatted text preview: -Other characteristics about science o A conclusion is supported, but almost never proved o Process can be repeated and same conclusion is obtained o In constant modification-Often a population is too large to have all individuals sampled-It is very important to have a good sample size-There are two parameters measured in statistics o Mean: average of all data values central tendency o Standard deviation: measures the level of spread of data values o The unit of mean and SD are the same Orientation Behavior (a Scientific method lab)-Taxis: an animal orients toward or away from the stimulus-Kenesis: a change in an animals rate of movement not involving orientation Statistics in Behavior Study Lab-Nonparametric approach-Does not measure mean or SD-Does not require normal distribution of data-Doesnt need a very large sample size (ex. 7 replicates or more, not hundreds)-Is not as powerful as parametric methods...
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Sept.3 - -Other characteristics about science o A...

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