The population of the United States grew by 9.1% between 2000 and 2009 The follo

Question

The population of the United States grew by 9.1% between 2000 and 2009 The following table reports the percentage growth in population for each of the 50 states during this decade. States are classified by whether they are east or west of the Mississippi River: Western State Alaska Arizona Arkansas California Colorado Hawaii Idaho lowa Kansas Louisiana Minnesota Missouri Western State Montana Nebraska Nevada New Mexico North Dakota Oklahoma Oregon South Dakota Texas Utah Washington Wyoming Eastern State Alabama Connecticut Delaware Florida Georgia Illinois Indiana Kentucky Maine Maryland Massachusetts Michigan Mississippi Eastern State New Hampshire New Jersey New York North Carolina Ohio Pennsylvania Rhode Island South Carolina Tennessee Vermont Virginia West Virginia Wisconsin % 11.4 28.6 8.1 7.2 3.5 3.0 16.6 1.7 13.0 16.0 20.1 4.0 5.6 6.7 32.3 10.5 16.8 6.9 19.5 2.8 4.8 6.9 11.8 7.6 18.8 24.7 13.1 10.2 13.7 10.7 2.1 11.4 0.6 5.4 7.6 3.9 0.3 7.0

Explanation / Answer

a) from the variances from west, east state we conclude that, Western state having more variability.

b) From the given data

From the inter quartile range of the Western, Eastern state we conclude that, inter quartile is more in eastern states.

c)

If the nevnada removed from Wester state, there is significantly decrease in variance and standard deviation.

WEST EAST 11.4 5.9 28.6 3.3 8.1 13 9.1 16 16.8 20.1 6.9 4 19.5 5.6 2.8 6.7 4.8 3.4 0.5 7.6 7 3.9 7 0.3 8.1 3.8 5 7.2 32.3 3.5 10.5 3 0.7 16.6 6.9 1.7 11.8 2.6 7.6 0.5 18.8 13.7 24.7 10.7 13.1 2.1 10.2 11.4 0.6 5.4 Sample size 24 26 Mean 11.34167 6.638462 Variance 68.5564529.79366

a) from the variances from west, east state we conclude that, Western state having more variability.

b) From the given data

Western state Eastern state Q1 6.9 Q1 3 Q3 13.1 Q3 20 Q3-Q1 6.2 Q3-Q1 17

From the inter quartile range of the Western, Eastern state we conclude that, inter quartile is more in eastern states.

c)

Sample size 23 Mean 10.43043 Variance 50.83858 s.d 7.13

If the nevnada removed from Wester state, there is significantly decrease in variance and standard deviation.

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