As part of a study on transportation the U.s. Department Transportation collect

Question

As part of a study on transportation the U.s. Department Transportation collect data on the number accidents per 10001 and the percentage of licensed drivers under the age of 21 in a sample of 42 cities. Data collected over a one-year period follow. These data are contained in the file named Safety. Develop numerical and graphical summaries of the data. Use regression analysis to investigate the relationship between the number of fatal of drivers under the age of 21. Discuss accidents and the your findings. What conclusion and recommendations can you derive from your analysis?

Explanation / Answer

Conclusion:

1.Average % below 21 is 12.3 and corresponding average accident is 1.922 per 1000

2. Deviation from average age is (-) ve then deviation in accident per 1000 from average is also (-)ve and vise-versa

3.Those states where frequency of % lower from average age, accident per 1000 is lower which increase with increasing %

4.Those states where % age lower than 21 is highest in 8% range but surprising accident average is also higher than other % range i.e. 9 & 10.

% Under 21 Fatal Accident per 1000 Difference from average% under 21 Difference from Average fatal accident per 1000 Range % Under21 Frequency Total accident Average 13 2.962 -0.7 -1.04 8 6 6.175 1.03 12 0.708 0.3 1.214 9 5 4.56 0.91 8 0.885 4.3 1.037 10 4 3.472 0.87 12 1.652 0.3 0.27 11 3 5.234 1.74 11 2.091 1.3 -0.169 12 5 7.924 1.58 17 2.627 -4.7 -0.705 13 3 6.738 2.25 18 3.83 -5.7 -1.908 14 5 11.183 2.24 8 0.368 4.3 1.554 15 3 8.661 2.89 13 1.142 -0.7 0.78 16 1 2.943 2.94 8 0.645 4.3 1.277 17 3 9.983 3.33 9 1.028 3.3 0.894 18 2 7.444 3.72 17 4.1 -4.7 -2.178 8 2.19 4.3 -0.268 16 3.623 -3.7 -1.701 15 2.623 -2.7 -0.701 9 0.835 3.3 1.087 8 0.82 4.3 1.102 14 2.89 -1.7 -0.968 8 1.267 4.3 0.655 15 3.224 -2.7 -1.302 10 1.014 2.3 0.908 10 0.493 2.3 1.429 16 2.801 -3.7 -0.879 12 1.405 0.3 0.517 9 1.433 3.3 0.489 10 0.039 2.3 1.883 9 0.338 3.3 1.584 11 1.849 1.3 0.073 12 2.246 0.3 -0.324 14 2.855 -1.7 -0.933 14 2.352 -1.7 -0.43 11 1.294 1.3 0.628 14 1.443 -1.7 0.479 18 3.614 -5.7 -1.692 10 1.926 2.3 -0.004 14 1.643 -1.7 0.279 16 2.943 -3.7 -1.021 12 1.913 0.3 0.009 15 2.814 -2.7 -0.892 13 2.634 -0.7 -0.712 9 0.926 3.3 0.996 17 3.256 -4.7 -1.334 sum 515 80.741 Average % below 21 12.3 Average accident per 1000 1.922

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