Florida Delaware TETRT State Population State Population State Population Louisiana Alabama Alaska 4.8 4.5 Ohio Oklahoma 11.5 0.7 Maine Maryland Massachusetts 1.3 5.8 6.5 3.8 4.3 12.7 1.0 6.4 Arizona Arkansas California Colorado Connecticut Oregon Pennsylvania Rhode Island South Carolina South Dakota 2.9 37.3 Michigan 9.9 5.3 Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota 5.0 4.6 3.6 0.8 6.3 25.1 3.0 Tennessee Texar 0.9 6.0 18.8 0.9 Техas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Georgia Hawaii Idaho 9.7 1.8 2.8 0.6 8.0 1.4 2.7 1.6 1.3 Illinois Indiana Iowa Kansas Kentucky 12.8 6.5 3.0 2.9 4.3 8.8 6.7 2.0 1.9 19.4 5.7 9.5 0.6 0.7
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Question
Data showing the population by state in millions of people follow (The World Almanac, 2012). The dataset in Excel file 2012Population.xlsx.
a. Develop a frequency distribution, a percent frequency distribution, and a histogram. Use a class width of 2.5 million.
b. Does there appear to be any skewness in the distribution? Explain.
c. What observations can you make about the population of the 50 states?
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