Please do not waste my time if you do not know statistics.

Please do not waste my time if you do not know statistics.

This is part one of the homework. I will attach the file for the full homework.

CARS: A sample of 20 cars, including measurements of fuel consumption (city mi/gal and highway mi/gal), weight (pounds), number of cylinders, engine displacement (in liters), amount of greenhouse gases emitted (in tons/year), and amount of tailpipe emissions of NOx (in lb/yr).

 

CAR

CITY

HWY

WEIGHT

CYLINDERS

DISPLACEMENT

MAN/AUTO

GHG

NOX

Chev. Camaro

19

30

3545

6

3.8

M

12

34.4

Chev. Cavalier

23

31

2795

4

2.2

A

10

25.1

Dodge Neon

23

32

2600

4

2

A

10

25.1

Ford Taurus

19

27

3515

6

3

A

12

25.1

Honda Accord

23

30

3245

4

2.3

A

11

25.1

Lincoln Cont.

17

24

3930

8

4.6

A

14

25.1

Mercury Mystique

20

29

3115

6

2.5

A

12

34.4

Mitsubishi Eclipse

22

33

3235

4

2

M

10

25.1

Olds. Aurora

17

26

3995

8

4

A

13

34.4

Pontiac Grand Am

22

30

3115

4

2.4

A

11

25.1

Toyota Camry

23

32

3240

4

2.2

M

10

25.1

Cadillac DeVille

17

26

4020

8

4.6

A

13

34.4

Chev. Corvette

18

28

3220

8

5.7

M

12

34.4

Chrysler Sebring

19

27

3175

6

2.5

A

12

25.1

Ford Mustang

20

29

3450

6

3.8

M

12

34.4

BMW 3-Series

19

27

3225

6

2.8

A

12

34.4

Ford Crown Victoria

17

24

3985

8

4.6

A

14

25.1

Honda Civic

32

37

2440

4

1.6

M

8

25.1

Mazda Protege

29

34

2500

4

1.6

A

9

25.1

Hyundai Accent

28

37

2290

4

1.5

A

9

34.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Part I

Generally the first step to analyze a dataset that is given to you is to identify the type of data, and picture the data using graphs etc. Use the data set above to answer the following questions:

 

 

1.      Assume that the car column represents all car models. Use the random number Table B, to generate a simple random sample of 15 car models from the set above.

 

 

 

2.      Classify all the columns: car, city, HWY, weight, cylinders, displacement man/auto GHG NOX according to the following:

i.                    Categorical or quantitative

ii.                  Discrete or continuous or none

iii.                Levels of measurement: nominal, ordinal, interval or ratio.

 

 

3.      Make a frequency distribution for MAN/AUTO

4.      Make a frequency distribution for DISPLACEMENT. (also include the column for cumulative frequency)

5.      Make a bar graph or pie chart for MAN/AUTO.

6.      Make a histogram for DISPLACEMENT.

i.                    Determine the type of skewness- left, right, symmetric or none.

ii.                  Determine the variability-high or low.

7.      Make a stemplot for CITY

i.        Determine the type of skewness- left, right, symmetric or none.

ii.      Determine the variability-high or low or none.

 

8.      Make a dotplot for CYLINDER.

i.                    Determine the type of skewness- left, right , symmetric or none.

 

ii.                  Determine the variability-high or low, or none.

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