Statistics Analysis

Impact of Different Car Types on city Miles Per Gallon

I. Introduction
In this study, we want to determine whether city miles per gallon (MPG) is several(predicate) for different car types. We investigated three car types ( cheap/compact, small, large/van) and selected 70 information samples from 93CARS data set by Robin H. Lock (1993). The issue of this study is important to determine the car type that is the closely fuel-efficient so that we can make a better ending when buying a car.

II. Descriptive Statistics and Variables
Table 1 shows the thickset statistics for all quantitative variables in this study: minimum price, city MPG, and engine size. For the variable minimal Price, data arrange is $27,900, inter-quartile range is $9,270, the median is smaller than the mean which means the scattering is skewed to the right, and it has a measure deviation of $6,760. For the variable City MPG, data range is 31 MPG, inter-quartile range is 6.75 MPG, median is 23 MPG, mean is 23.33 MPG, and standard deviation is 6.09 MPG. For the variable Engine coat, data range is 4.70 liters, inter-quartile range is 1.2 liters, median is 2.30 liters, mean is 2.56 liters, and standard deviation is 1.09 liters.
VariableUnitsSample SizeMeanSDMinimumQ1MedianQ3Maximum
Minimum Pricethousands of dollars7014.716.766.709.



0313.5018.3034.60
City MPGmiles per gallon7023.336.0915.0019.0023.0025.7546.00
Engine Sizeliters702.561.091.001.802.303.005.70
Table 1. summary Statistics for Quantitative Variables
Table 2 below shows the summary statistics for plane variables included in this study: car type and impart bag. From the data, we know that majority of the cars in this pool of data is sporty/compact car type which constitute 41.43%, or 29 cars, of our recover along sample. Small cars made up 30%, or 21 cars, of our total sample and large/van car type made up 28.57%, or 20 cars, of our total sample.
Also, from the data, we can see that 44.29%, or 31 cars, of...If you want to get a full essay, order it on our website: Orderessay



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