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Data Presentations

The descriptive statistics for the median household income shows that there is a significant difference between maximum and minimum value of this index. Te minimum value is more the two times less from the maximum value. Te data is distributed symmetrically because the mean and the median are very close and the skewness is comparatively small. I can be assumed that the data is normally distributed (Mendenhall, Baver and Beaver, 2013). Te main feature of the data is the large difference between the maximum income (\$ 7,180) and income (\$ 34050), a well as corresponding large range.

Te data about the average years of schooling show that in most counties people study about 12 years. Te close values of the mean, mde and median is a sign that this situation is typical for most of the counties. Te data is also symmetrical and normally distributed. Te minimum value of 9. 9years may mean that the small number of people decide to enter college or even do not graduate from high school. Te maximum value of 14 years most of people in the county continue their education after the high school.

Hwever, te most typical situation is that about a half of population or lees decides to continue the education in the college or university. Te data about the average lifespan show that there is a significant difference between the maximum and the minimum value of this parameter. Hwever, te values of mode and median are median are close, wich means that the average lifespan for the most counties is 77-78 years. Te fact that the value less than mode and median can be explained by the presence of the outliers or the counties, were the average lifespan is significantly lower than the average value.

Te table of descriptive statistics for average number of people per household show that the data is normally distributed. Te mean, mdian and mode are very close to each other. Te minimum value of 1. 8persons per household means that children prefer to live separately from the parents in most families of the county. Te maximum value of 3. per household that children and parents share one household or old parents live together with their grown children.

Te most typical situation is when 2-3 people live in one household. Te presence of outliers or the data that differs significantly from the rest can be estimated using the z-score. Te z-score for the individual. ..

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