AMAT 108 - Study Guide - Midterm

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Unformatted text preview: Mate Terms and bisplaying bata dividuals are nouns being described. Variables are charac - tershes that describe tu indwiduals. 4 Variables can be quanh tative or qual tahuel Categorical los jears, + One can display cateqor'i tas data in tu following rays : O Bar graph 1 Pie C e Did HUB relahve frequenci * gaps bin ons proportion (m), percent (100l, probabil- by () all represent thus same : dea in different ways i no h. Scale kno order to bass ano f\omo From one cateoon, to another One can d'is plan quanttative data in the following ways' O Stem plot, Split Stcm plot , back - to - back stem plot. 2, 3, 4 , 2, 3, 4, b, b, 9 1 2S Histogram no gips Lip bars 1 horizontal Scale *logical order In terms of shape, quantita fue data can be : o Symmetric o Biqut - skewed (posi Kively s kewed) Left - skuwe d (nu qa hvely skewed) Unimodal, Bimodar UniformesCentres and Spreads key points "Spread refers to Hue distana bla Sets of numbers. " Centres cxist because of summer : wudion Center = mean IOR = 'spread = SD c a opp - Mean: Balance point = Afreeted by coutliers, cxtrometies and long tails Mean is the spot in the list where half thu nt in Hue Set a bigger and tu otluer half are: Smaller. y lo compite: O Order Hue list Otor odd set ho m'delle nis Hus median but for cuen seks. Hue aweraqt of tu bro middle numbers is has median. Lb Pot affected by outliers, extreme ties and long tails IKAN l. skuevo r. skep menn - mean C media - mean > med an Sumruetrical - mtan = medias Cmost of the time)

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