MGEB11H3 Study Guide - Comprehensive Final Exam Guide - Variance, Random Variable, List Of Wwe United States Champions
20 Nov 2018
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Mgeb11 lecture 1: introduction to descriptive statistics. Statistics = quantitative methods a procedure to infer/predict the population based on sample results. A population is the universe under study. If size of population is manageable (small enough), we do the study on everyone in pop. If pop. size = too large (cid:894)i. e. the stud(cid:455) (cid:272)a(cid:374)"t (cid:271)e do(cid:374)e to e(cid:448)er(cid:455)o(cid:374)e i(cid:374) pop. (cid:895), (cid:449)e sele(cid:272)t part of the pop. ; a (cid:858)sample(cid:859) (study is then done on the sample: sample results are used to infer the overall pop. result. The components of statistics: descriptive stats describing what we have seen in the data collected, graphs, numerical measures. Inferential stats drawing conclusions on a population based on sample results: estimation, point estimation a specific numerical value. Interval estimation a range/interval (e. g. 32-40%: hypothesis testing. We use graphs to describe the population or sample; many kinds of graphical description on the population or a sample. This is no unique way to draw graphs.
