Environmental Science Week 2
Environmental Science Week 2 10216 - BIO 105 - 04
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This 2 page Class Notes was uploaded by Brooke Yaffa on Sunday October 11, 2015. The Class Notes belongs to 10216 - BIO 105 - 04 at Grand Valley State University taught by Jennifer S Cymbola in Summer 2015. Since its upload, it has received 10 views. For similar materials see Environmental Science in Biology at Grand Valley State University.
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Date Created: 10/11/15
Environmental Science Notes week 2 September 10 2015 Chapter 2 Brooke Yaffa Science is 339 A body of facts and explanations 339 A process of producing knowledge about the world through methodological studies of nature v Skeptical methodological and unbiased Scientific Method Observation prompts a question The question is further developed into a hypothesis Then the hypothesis must be scientifically tested many times If the test fails then you try a new test to prove the hypothesis or adjust the hypothesis Once a test succeeds then you analyze data and lastly you draw conclusions Observation gt Question gt Hypothesis gt Test gt Analyze gt Draw Conclusions Testing a Hypothesis Hypothesis tentative explanation for an observation Must be testable and falsifiable May be rejected or accepted but cannot be proven fully Observational Studies 339 Data is collected in the real world 339 There is no manipulation of the subjects 339 These studies can only show correlations Experimental Studies 339 Data is collected by manipulating variables 339 Uses test groups and control groups 339 These studies can show cause and effect relationships Correlation vs Causation Correlation Causation When two things occur together but When two things occur together but one one does not necessarily cause the directly occurs the effect in response other to or as a result of the other the cause Designing an experiment Independent variables Factor being manipulated The response of an All other things should organism or the be held constant during characteristic that the experiment is measured Test Groups Control Group 5 Group that is exposed to different Group that provides the standard of levels of the independent variable comparison for the test groups Sometimes called the baseline Replication repeating a successful experiment to prove hypothesis The more the experiment is repeated with successful results the more it is believed and respected among scientists Statistics Determine if differences exist between test and control groups A probability value p value determines a significance of differences Peer Review Scientific reports are reviewed by a group of third party experts Scientific theory A widely accepted explanation that has been extensively and rigorously tested
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