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Data Presentations

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The descriptive statistics for the median household income shows that there is a significant difference between maximum and minimum value of this index. The minimum value is more the two times less from the maximum value. The data is distributed symmetrically because the mean and the median are very close and the skewness is comparatively small. It can be assumed that the data is normally distributed (Mendenhall, Beaver and Beaver, 2013). The main feature of the data is the large difference between the maximum income ($ 7,180) and the minimum income ($ 34050), as well as corresponding large range.The data about the average years of schooling show that in most counties people study about 12 years. The close values of the mean, mode and median is a sign that this situation is typical for most of the counties. The data is also symmetrical and normally distributed. The minimum value of 9.9 years may mean that the small number of people decide to enter college or even do not graduate from high school. The maximum value of 14 years means that most of people in the county continue their education after the high school. However, the most typical situation is that about a half of population or lees decides to continue the education in the college or university.The data about the average lifespan show that there is a significant difference between the maximum and the minimum value of this parameter. However, the values of mode and median are median are close, which means that the average lifespan for the most counties is 77-78 years. The fact that the mean value is less than mode and median can be explained by the presence of the outliers or the counties, where the average lifespan is significantly lower than the average value.The table of descriptive statistics for average number of people per household show that the data is normally distributed. The mean, median and mode are very close to each other. The minimum value of 1.8 persons per household means that children prefer to live separately from the parents in most families of the county. The maximum value of 3.5 persons per household means that children and parents share one household or old parents live together with their grown children. The most typical situation is when 2-3 people live in one household.The presence of outliers or the data that differs significantly from the rest can be estimated using the z-score. The z-score for the individual
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preview essay on Data Presentations
  • Pages: 6 (1500 words)
  • Document Type: Essay
  • Subject: Statistics
  • Level: Masters
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