PSY201H1 : Textbook notes - applicable to spring term as well

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1 Feb 2011
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Statistics: set of standardized mathematical procedures used to organize, summarize. 1. 2 population: set of all individuals of interest in a particular study sample: set of individuals with in a population, usually selected to represent the population in a research study. ** can also refer to scores that correspond to individuals rather than the indiv. themselves** Once a study is done on a sample, the goal is to generalize the results back to the poplulation. variable: characteristic or condition, values for different individuals or over time. data: measurements or observations datum = 1 data set = collection of . score / raw score: common words for datum. parameter : a characteristic that describes the population: usually numerical value, usually derived from measurements of individuals within population, ex: avg. reading score for *all 4th-graders in texas* \ \ \ ~~~~ population parameter ~~~~ / / /

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