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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 ﬁvenumber summaries, labeled I — IV. Match each ﬁvenumber 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 ﬁvenumber 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 ,
ScaﬁOptics 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.)
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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. 1Which 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
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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 = JVa.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 ﬁvestar 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} elmflith (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 (“LRJ i
[lHFimbaf) H 3.1.1: as 1H 5‘ {qu PH {1.) Comment on the orities"r evaluations ome‘man Begins. m Wjﬂﬁ‘l'lﬂ (13/: a) MC wile»; mutualMl 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 sidewbyside 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 metapt] 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 lunar3,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’ Pia1' of“ mg
5mm , mm /
E ,x
‘4 /
Ulzpr) E /
(“H meld g / / Fight He h.) Draw a 45degrce 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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 Spring '08
 VANES,C.

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