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Date: 2009-04-15 04:18:14Scientific method Evaluation methods Philosophy of science Observational study Causality Experiment Acupuncture Scientific control Experimental research design Science Design of experiments Statistics | Teachers’ Reference Lesson 4 Experimental Designs Learning ObjectivesAdd to Reading ListSource URL: resources.edb.gov.hkDownload Document from Source WebsiteFile Size: 257,50 KBShare Document on Facebook |