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).

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.