answer_key_sec_3 - AEMZII] Name: W Spring EMS Section:...

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Unformatted text preview: AEMZII] Name: W Spring EMS Section: E" l" 3’ Section 3 l.) The accompanying figure shows four boxplots, labeled A — D. Also given are four five-number summaries, labeled I — IV. Match each five-number sun'u'nar}r to the appropriate boxplot. Note that scales are not included on the hoxplom, so you will have to think about what the five-number summary,r implies about characteristics of the hoxplot. { 2.) In most industries, goods are shipped, the product works, and the customer pays. But in highwtechnology industries, confusion abounds over when a sale is really a sale. Sometimes, the product is shipped, and a sale is recorded—but the product has bugs, and customers balk at paying. The accompanying table lists a sample of high— technology companies and the number of days [on average} it takes each to collect payment for salfi made. AVERAGE NO. OF AVERAGE NO. OF DAYS TO COLLECT DAYS TO COLLECT COMPANY ON SALE COMPANY ON SALE Applied Data Research 126 TvBar I44 Ungermann—Eass l 3] Microdyne l54 Intercom l 3 l CPT 155 Computervision 132 Masstor Systems 163 Computer Entry System 13? Aydln HE Silicon General Mt] Network Systems [3] Ports Systems I4] Radiation Systems 184 Data Switch 143 DSC Communications 2]? Sea are Technolo y 143 C3 231 , Scafi-Optics g 144 UTL 242 mile MW” 11:— §MMW _ a.) Construct a box plot for these data. Include a five number summary. (Note: the {P1503 W5 data is already ordered.) = mamflyj [CHEF Iris-snafirfiflfldayr mg _ I Q 5W! Ihncr Fm as: : lesser-5(a), as. 5” rf-Ff‘ff3)o {#4: W3 " Ll sci-w Faces = ma. 5 '- arse, PM: (Hayes) 47 {I 6- 9', W95) (Pa: Isa-5 saw games a? causes/1 “WW-l x { Us Fr) El: Is! on L59 to” :13“ a rated" Pa mm? b.} Based on the box ElloLmlEan be said abcldt the shape of the frequency diso'ibut'on of the data set? imika sittewa “h? W vial/UL c.) Use the box plot to identify outliers in the data set. 1|Which firm[s} have outiving values? (How) mus Mt'iél,i’ll'fii/k Max M sit? as; d.) The mean and the standard deviation of the data set are 150.35 and 34.3, respectively. Find the z—seore for the outliefls) you identified in part c. Would this be considered an outlier using the z score approach? {war a m Eli-3: . [mu wands?! be M bar Im'hfim’ M an aim its some 1:; 1.5.55 MM 3- e.) Considering the z—score you obtained in part d is it lilccl}r that the average {I l 1" Lri’i number ol'davs to collect on a sale for a high—tech firm would be larger than 242? Explain. _ F F ,—s,:? was mew Shelly/r“? EWW = J-Va.a}1~ .9; a as. Warmthst 01" w W mum wru ta” MM 3—??? start/1d. ciavsnfimm 1w; .5:qu I Wald Wt iv be,» Ihflfidflblg MM is m “gar Mug 15% slim/data 11: we sumo—rm WM. :smr ll'kaly +9 haw 41w Wt bang WWW w}. tr w pawl a11qu fiwl 3.) Netflix, Inc., of San Jose, California. provided DVD rentals of more than SILIJDI] titles by mail. Customers go online to create an order list of DVDs the};r would like to view. Before ordering a particular DVD, the customer may,r vievvr a description of the DVD and, if desired, a surnrnarv of critics' ratings. Netfix uses a five-star rating system with the following descriptions: 1 star Hated it 2 star Didn’t like it 3 star Liked it 4 star Really,r liked it 5 star Loved it Eighteen critics, including Roger Ebert of the Chicago San Times and Ty Burr of the Boston Giana, provided ratings for the movie Batman Begins fNetflixcom, March l, 20%). The ratings for Baboon Begins 1«were as follows: 4, 2, 5, 2, 4, 3, 3, 4. 4, 3. 4. 4. 4. 2. 4, 41 5, 4 a.} Are these data quantitative or ualitative‘? {new} elm-flith (maul/1a.!) (p.305 b.) Construct a frequency and relative frequency distribution for the data.( Huang Fag: m. FE . 1e 0 0 H 3 Wears (It; i M a 4'3“ PP If ‘F if? .55 5 r ya 41.1.; of r c.) Provide a bar graph of the relative frequency distribution. if 9’!) 2M. Bat” WW I Rdzh'l’lflS ,0?) £33- DU :2 {no (“LR-J i [lHFi-mbaf) H 3.1.1: as 1-H 5‘ {qu PH {1.) Comment on the orities"r evaluations ome‘man Begins. m Wjflfi‘l'lfl (13/: a) MC wile»; mutual-Ml out we; as an! ar 51,50 weave «the wee W5 watt we:le- 4.) We are interested in describing two variables concerning the students in this section: "Gender", and "Season of Birth“. “Season of Birth" is defined in the following manner: Fall - September, October, November Winter - Deeernber, January, Febmary, Spring - March [this is reallyr a lie for lthaea}, April, l'vla},F Summer - June, July, August a.) Are the variables qualitative or quantitative? Is this a Sample or a population? Hfoilw man elements I oyou have?{ . 2'19 - @MILUT'EL 'U‘l’x flmlmfl . . . will”) ePaputarlTM'KI‘eWfi 1"“ 3411”; 39h“) flame --= s #I'IIW I“ 56mm b.) Construct a 2 by 4 table with “Gender” as the row varimsle and “Season” as the column variable. Mufti ultll tiara ha Stir/hittin- c.) For the females, find the percentage horn in each season. Find the same {I {1' Fl.) percentages [hr the males. Show the resulting table cf percentages and write a brief description of the resultsfiv. Lira '{rl' \ em iii-{'61 i REWLL #rfitll’ mg: - W! mete Lefl {MPH at wrm'ph'ear wi‘li Li'de {1.) Construct a sidewby-side bar chart comparing the distribution of the hirflldfll’fi For each girder. Discuss the #ii‘fereneesfsimilerities W surveys? ear chart mch'm in; PM ram smear” {:3 Review (itqleW/b] PM W NM {FM met-apt] WWW 4t Dercn'ph'anr WM use} 3mm spring 3mm 5.) When your TA gives you the Signal, begin X'ing in the boxes with your pencil or pen. Use your right hand. The instructor will ask you to stop after one minute. Cross out as lunar-3,r boxes as you can during that time. Cm mm mm m mm m Number ofboxea erosoed out = Now, at the signal, do the same, but with your left hand. mm mm mm m: mm m Number ofhoxes crowed out = 1: Record your class dam on : x = the nmnher of boxes crowed out with the right hand. 3; = the number of boxes creased out with the left hand. Data: .1: {right count] 3‘ {left count} .1: (right count) y {left count} 3.) lConstruct a scattet plot of the data. (1?. QB Seefia’ Pia-1' of“ mg 5mm , mm / E ,x- ‘4 / Ulzpr) E / (“H meld g / / Fight He h.) Draw a 45-degrce line where 3: would equal Jr on your scatter plot. This line [ ill-[PH would generally divide the observations into two groups. What are those groups? eater: =5" teens c.) If you needed to hire a person 1who could write quickly and well with both hands, which person would you select? (“W some value MK WM m If? one H 3 d.) lfyou needed to hire a person who could mite quickly and well withjust their “L, ll [3+ right hand which person would you select? slaw n'gw MM emMKfiIW '10 My mate) .._J ...
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This note was uploaded on 04/02/2008 for the course AEM 2100 taught by Professor Vanes,c. during the Spring '08 term at Cornell University (Engineering School).

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answer_key_sec_3 - AEMZII] Name: W Spring EMS Section:...

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