FINAL PROJECTBliss Brannon, Dan Faulkner, Ryan Dickson

Our Idea

We wanted to see which car was most popular in the mall parking lot

We felt that there would be different people going to the mall on different days and at different times of the day.

Collection of Our Data

We went to different malls on different days so that we would get a better representation of the people that go to the mall To get an even better representation of the

population we also went at different times of the day

While collecting our data we only collected every third car so that our data was random

Background

The Ford Model-T was created in 1908 as the first car

Since then they have been creating more aerodynamic cars that are able to go faster

As gas prices went up car engine sizes went down, but the engine efficiency went up and cars became faster and more fuel efficient

Variables

When collecting our data we decided to look at The make of the car The specific model What type of car it is (sedan, coupe, etc.) The color of the car Whether or not the car had a custom

license plate The engine size

Which car do you think is most popular in the mall parking lot?

Make

The most popular company that was in the mall parking lot was Toyota, with Honda not that far behind

There were a lot of companies that only had one car in the parking lots

5

10

15

20

25

30

35

40

45

Make

Acu

ra

Aud

i

BM

W

Bui

ck

Cad

illac

Che

vy

Chr

ysle

r

Dod

ge

For

d

GM

C

Hon

da

Hyu

ndai

Infin

iti

Jagu

ar

Jeep KIA

Land

Rov

er

Lexu

s

Maz

da

Mer

cede

s

Mer

cury

Min

i

Mitz

ubis

hi

Nis

san

Pon

tiac

Saa

b

Sat

urn

Sci

on

Sm

art

Sub

aru

Sub

uru

Suz

uki

Toy

ota

Vol

ksw

agon

Vol

vo

count

Collection 1 Bar Chart

Model

Model

3 6 75

93

300

325C

I328I

333C

I350Z

4R

unner

528I

535I

A4

Accent

Accord

Altim

aB

onneville

C280

C300

Caliber

Cam

aro

Cam

ry

Cellic

aC

harger

Cherokee

Civ

icC

obalt L

SC

olb

alt S

SC

om

mander

Cooper

Corolla

Cruis

er

CR

VC

X7

Deville

Dis

covery

Durango

E5360

Echo

Edge

Ela

ntr

aE

lem

ent

Envoy

Equin

ox

Escape

EX

470

Expeditio

nE

xplo

rer

F150

F250

Fie

sta

Forenza

Forste

rF

usio

nG

37S

Grand C

aravan

Grand C

herokee

Grand M

arquis

eG

TR

GX

470

Hybrid

Impalla

Ion

Jetta

Lib

erty

Lucerin

e

M35X

Magnum

Malibu

Matr

ixM

axim

aM

DX

Monte

Carlo

Monte

ro

Moreno

Musta

ng G

TO

dessy

Outb

ack

Pasatt

Path

finder

Pilot

Priu

sP

T C

ruis

er

Pure C

oupe

Q5

Quest

RA

M

RA

V 4

Rid

ge-line

Runner

S2000

S40

S60

Sable

SC

2S

ebrin

gS

entr

aS

entr

yS

ienna

Sie

nna X

LE

Sonata

Sorento

Soul

Str

atu

sS

uburban

Tacom

aT

aurus

Titan

TL

Torrent

Trailbla

zer

Trans-am

Trib

ute

TS

XT

X5

Venza

VU

EW

rangle

rX

3X

5X

C80

XD

X-T

ype

Yaris

Yukon X

L

count

Collection 1

2

4

6

8

10

12

14

16

Model

3 6 75

93

300

325C

I328I

333C

I350Z

4R

unner

528I

535I

A4

Accent

Accord

Altim

aB

onneville

C280

C300

Calib

er

Cam

aro

Cam

ryC

ellica

Charg

er

Chero

kee

Civ

icC

obalt L

SC

olb

alt S

SC

om

mander

Cooper

Coro

llaC

ruis

er

CR

VC

X7

Deville

Dis

covery

Dura

ngo

E5360

Echo

Edge

Ela

ntr

aE

lem

ent

Envoy

Equin

ox

Escape

EX

470

Expeditio

nE

xplo

rer

F150

F250

Fie

sta

Fore

nza

Fors

ter

Fusio

nG

37S

Gra

nd C

ara

van

Gra

nd C

hero

kee

Gra

nd M

arq

uis

eG

TR

GX

470

Hybrid

Impalla

Ion

Jetta

Lib

ert

yLucerine

M35X

Magnum

Malib

uM

atr

ixM

axim

aM

DX

Monte

Carlo

Monte

roM

ore

no

Musta

ng G

TO

dessy

Outb

ack

Pasatt

Path

finder

Pilo

tP

rius

PT

Cru

iser

Pure

Coupe

Q5

Quest

RA

MR

AV

4R

idge-lin

eR

unner

S2000

S40

S60

Sable

SC

2S

ebring

Sentr

aS

entr

yS

ienna

Sie

nna X

LE

Sonata

Sore

nto

Soul

Str

atu

sS

uburb

an

Tacom

aT

auru

sT

itan

TL

Torr

ent

Tra

ilbla

zer

Tra

ns-a

mT

ribute

TS

XT

X5

Venza

VU

EW

rangle

rX

3X

5X

C80

XD

X-T

ype

Yaris

Yukon X

L

count

Collection 1

Type

46% of all of the cars we saw in the parking were sedans

The type of car we saw least in the parking lot was a station wagon

Surprisingly there were more SUVs then there were coupes

20

40

60

80

100

Type

Cou

pe

Cro

ssov

er

Min

i-Van

Sed

an

Sta

tionw

agon

SU

V

Tru

ck

count

Collection 1 Bar Chart

Collection 1

RowSummary

TypeTypeTypeTypeTypeType

Crossover Mini-Van Sedan Stationw agon SUV Truck

Type

Coupe

26

0.12381

8

0.0380952

13

0.0619048

98

0.466667

7

0.0333333

51

0.242857

7

0.0333333

210

1

S1 = countS2 = row proportion

Color

From this graph you can tell that the color that showed up the most in the mall parking lots was black

10

20

30

40

50

60

Color

Blac

k

Blue

Brow

n

Gol

d

Gre

en

Gre

y

Mar

oon

Nav

y

Ora

nge

Red

Silv

er

Whi

te

Yello

w

count

Collection 1 Bar Chart

Custom License Plate

There weren't that many cars in the parking lot that had a custom license plate

Around 5% of the cars in the parking lot had a custom license plate and they weren't on any specific make or model

20

40

60

80

100

120

140

160

180

200

Custom_License_Plate

No Yes

count

Collection 1 Bar Chart Collection 1

Column Summary

No

Yes

Custom_License_Plate

199

0.947619

11

0.052381

210

1

S1 = countS2 = columnproportion

Engine Size

Most of the engines were 4 cylinder The min was a 3 cylinder and the max was a V8

10

20

30

40

50

60

70

80

90

Engine_Size

0 2 4 6 8 10

Collection 1 Histogram Collection 1

Engine_Size

5.62381

3

4

6

6

8

210

1.55794

0.107508

0

S1 = meanS2 = minS3 = Q1S4 = medianS5 = Q3S6 = maxS7 = countS8 = stdDevS9 = stdErrorS10 = missing count

Country vs. Engine Size

Ho: Engine size is independent from the country that it was made in

Ha: Engine size is dependent from the country that it was made in

Test of Collection 1 Test for Independence

First attribute (categorical): Country

Second attribute (categorical): Engine_Size

RowSummary

Column Summary

Country

F

Country

A

4

6

8

Engine_Size

12 (24.4) 73 (60.6)

19 (22.1) 58 (54.9)

29 (13.5) 18 (33.5)

60 149

85

77

47

209

Vs.

Conditions

Categorical Data? SRS? All expected cell

counts are greater than 5?

Yes The sample is

random Yes

Work

df=2

Chi-squared= 34.45

P(chi-squared>34.45)=0.0001

Conclusion

We reject our Ho because our p-value of .0001 is less that alpha of 0.05.

We have sufficient evidence the engine size does depend on what country the car was made in.

Test on SUV

Ho: p = 10%

Ha: p > 10%

Test of Collection 1 Test Proportion

Attribute (categorical): Type

Attribute: Type51 out of 209, or 0.244019, are SUV Alternative hypothesis: The population proportion for SUV is greater than 0.1 .

The test statistic, z, is 6.94.

If it w ere true that the population proportion of SUV w ere equal to 0.1 (the null hypothesis), and the sampling process w ere performed repeatedly, the probability of getting a z value this great or greater w ould be < 0.0001.

Note: This probability w as computed using the normal approximation.

Conditions

SRS? np and nq > 10 Pop > 10n

The sample of the cars was random

12 and 38 > 10 All SUVs > 2090

Z=6.94

P (z>6.94) = .0001

Conclusion

We reject our Ho because our p-value of 0.0001 is less than alpha of 0.05

We have sufficient evidence that there was a greater percent of SUVs in the mall parking lot then the percent of SUVs in America.

Test on Toyota

Ho: p = 12%

Ha: p > 12%

Test of Collection 1 Test Proportion

Attribute (categorical): Make

Attribute: Make43 out of 209, or 0.205742, are Toyota Alternative hypothesis: The population proportion for Toyota is greater than 0.12 .

The test statistic, z, is 3.814.

If it w ere true that the population proportion of Toyota w ere equal to 0.12 (the null hypothesis), and the sampling process w ere performed repeatedly, the probability of getting a z value this great or greater w ould be < 0.0001.

Note: This probability w as computed using the normal approximation.

SRS? np and nq > 10 Pop > 10n

The sample of the cars was random

12 and 38 > 10 All Toyota > 450

Test

We reject our Ho because our p-value of 0.0001 is less than alpha of 0.05

We have sufficient evidence that the percent of Toyotas in the mall parking lot was greater then the percent of Toyotas in America.

Z=3.184

P(z>3.184) = 0.0001

Bias and Error

We went to the mall on a holiday weekend so some people that may frequently visit the mall may have been on vacation

We may not have gone every third car the whole time because some of the vehicles names are on the side of the car and we couldn’t get them.

The engine size was assumed based on the model, but the car could have gotten and engine swap and had a larger engine then assumed.

Personal Opinion

We thought that the most popular cars would be the Honda Accord, Civic, and the Toyota Camry

Bliss and Dan thought that the most popular color would be black, and Ryan thought the most color would be silver

We felt that there would be more sedans then anything else, and the most popular engine would be a 4 cylander

Conclusion

We are able to conclude which color, make, model, engine size, and type of car were most popular Color: Black Make: Toyota Model: Camry Engine Size: 4 Cylinder Type: Sedan

We noticed that different cars are driven to the mall on different days and different times of the day