LIFESCI 1 Lecture Notes - Lecture 2: Null Hypothesis, Nucleic Acid Double Helix, Natural Experiment
Document Summary
Science: goal is to acquire knowledge and describe the world: evidence based, logic based, consistent, repeatable, conservative. Be curious/ask questions: hypothesis: proposed explanation for something observed. Testable statement to explain a phenomenon or a set of observations. Disprove null hypothesis (opposite of test) to prove hypothesis. 95+% to reject null hypothesis: experiments: scienti c tool to test predictions made in hypothesis. Controlled (changing one variable) to show causation. Wednesday, september 28, 2016: scienti c journals, peer review, scienti c citation. Scienti c error: science try to minimize error and be objective, humans/experiments are not perfect so measurements are approximations. Quality control: control, sample size, repetitions. Scienti c theory: can never be absolutely proven, supported theories/hypotheses have a very high probability of being true. Scienti c uncertainty: there is always possibility of new future evidence, knowledge is aways evolving. Life processes information: chromosome: genetic material consisting of dna.
