MGEB11H3 Lecture Notes - Lecture 2: Graduate Management Admission Test, Quartile
6 Mar 2020
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I measure of centre location a mean average mostcommonlyused butit"s sensitiveto extremelylarge andsmallvalues median. Example a test is given the gothpercentile of test scores is 78. Example rotman considers admissions to their mbaprogram if a studentscores at the gothpercentile or above in the gmatscores. Ingeneralthe kth percentile is a valve such that k percent of the data are belowthis value. Themedian salary is 70,0001year i e soy salaries are below 70,000. 6 themode of the salaries are 69,000 i e mostsalaries are at 69,000 d the 85thpercentile is 98,000 i e 854of salaries are below 98,000. N variance af z i u must be a positivenumber. Xm be sample observations from a sample of size n. Hence ijn ii ca it use eisa roundednumber n pair dnfie. pe. Iti exits use if i is auglynumber i e 7. 998. Example in asample of size in 8 thedata are given here findstddev. Ig 28 43. 975j f t 62b 43. 97512j 200. 622.
