Nursing 3340A/B Midterm: Data quiz 2 review
22 Nov 2016
School
Department
Course
Professor
Document Summary
Example methodology: meta-analysis, rct, experimental, quasi-experimental, correlation. Control: extraneous variable, homogenous sampling, constancy in data collection, manipulation of the independent variable, randomization. Data to answer: what, how much, and/or why. Internal validity: threats history, maturation, testing, instrumentation, mortality (attrition), selection bias) External validity: threats selection, reactive, measurement. Main objectives: testing of theory or hypotheses to: predict, explain, understand, to establish if the generalization holds true. Contain quantity many types of information i. e. height, age. Population all members of a particular group of interest, alike in one or more dimensions as defined by researcher. Sample part of that population, used in most studies. Variable defined concept, property that takes on different values. Probability frequency of an event in repeated trials under similar conditions. Statistic characteristic of a sample, mathematical terms. *statistic is to sample as parameter is to population* Typically, the variables manipulated, controlled (or at least recorded) by the researcher. T(cid:455)pi(cid:272)all(cid:455), the resear(cid:272)her"s (cid:373)ai(cid:374) (cid:448)aria(cid:271)le of i(cid:374)terest.
