Statistical Sciences 2864A/B Lecture Notes - Lecture 20: Multivariate Statistics, Univariate, Box Plot
9 Jun 2020
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Topics - last lecture of chapter 4- modelling, chapter 5 is stimulation. Have a proper flow control chart (don"t forget { }) Avoiding using global objects by all means. Follow general programming guidelines to avoid having bugs in the first place. Use error checks and print to spot potential bugs in middle steps. He"s going to demonstrate some codes with efficient programming. Var, sd, cor, quantile, range, rank, order, sort, iqr. Test statistics t. test one or two samples t-test. Sample mean - pop mean divided by st. dev over root n. Var. test f-test on two samples var. Wilcox. test wilcoxon rank sum or signed rank sum test. Underlying assumptions are weak, then you get the results learn in fourth year, very advanced statistics. Chisq. test chi-square test for one or two tables and goodness-of-fit test. Can handle continued time distribution and see if the data is normal or exp, etc. find the p-value if it"s very small, reject the null hypothesis.
