L1b_Intro_Statistics - Introduction To STaTisTics...

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Unformatted text preview: Introduction To STaTisTics STaTisTics is The science of collecTing, organizing and inTerpreTing daTa DaTa is collecTed using differenT Types of sampling The daTa is organized inTo Tables and Then presenTed in a graph DifferenT Types of graphs can be used depending on The Type of daTa ThaT is being presenTed Types of Graphs 1. Pictograph - makes i’r easy To compare dis’rinc‘r fac‘rs-i‘r helps you make comparisons quickly 0 i’r is a varia’rion of The bar graph 0 can be used To display da‘ra in an appealing manner Smarties @922 m m «J 00 co @@@ Number of Smarties A @@@@ @@ Blue Red Green COlOUl' 2 . Bar Graph a graph ThaT uses bars To represenT daTa; The bars have spaces beTween Them makes iT easy To compare disTincT facTs easily organizes and displays daTa someTimes we use double bar graphs To compare seTs of daTa; in This case There are no bars beTween The seTs Example: A box of SmarTies has 6 blue, 7 red and 4 green SmarTies. On The grids below, draw a picTograph and a bar graph To represenT The daTa. Be sure To label all parTs of The graph and give iT a TiTle. Smarties Number of Smarties (.0 J: [\J _\ I Colour Blue 3. Circle Graph 0 a graph using secTors of a circle To represenT daTa 0 shows how parTs of someThing are relaTed To The whole Thing 0 Given The number of SmarTies for each color of SmarTies in a box of 43, compleTe The Table Using a COMPASS and a PROTRACTOR, draw a circle graph below -m mm: -—__ -—__ --—— --—— 4. Line Graph / Broken-Line Graph 0 a graph ThaT relaTes ’rwo variables as ordered pairs, wi’rh consecutive poinTs joined by line segmem‘s o of’ren shows a change over Time N n-n emperature degrees -20 -18 -10 -3 7 12 32 27 20 13 5 -11 elsius) Average Marrthw Tarrparaturaa in Ottawa 3|] h-J I: _‘.. I: T amp aratura (Calai us) JFi-flfi-MJJASONDMEWH I _‘.. I: —2|I| Homework In order for you to successfully understand the Statistics Unit, it is essential for you to be able to use and understand the proper terminology. Use the glossary and Chapter 2 in your textbook to write out the definitions of the following terms: a) hypothesis h) primary data b) inference i) secondary data c) sample j) variable d) bias k) interpolate and e) survey extrapolate f) frequency I) mean, median and mode distribution m) line of best fit table (linear regression) g) census n) outlier ...
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This note was uploaded on 10/09/2011 for the course STAT QUA2220 taught by Professor Dr.emirjunver during the Spring '11 term at Algonquin College.

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