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# Statistics Article

Review of Three Latent Class Cluster Analysis Packages: Latent GOLD, poLCA and MCLUST
The economic variable captures the income level of the country. Infrastructure includes data on telephone lines and electricity consumption. The demographic variable includes data on population, age and years of schooling. Finally, the Risk Index is used to capture the risk related to the political situation in each country.Basic description on the cost, guide features, tutorials and installation requirements of the software is provided. The article also provides description on the usage of the
Pages: 3 (750 words), Article
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Descriptive and Inferential Statistics
For example, a newspaper might report that 80% of the respondents in a United Kingdom mall survey reported that they read newspapers versus reading them online. An inferential statistic arising from this measurement could be: this was statistically higher than the average population reading printed newspapers in the United States. Inferential statistics provide an inference i. a conclusion based on various statistical testing techniques: z-test, p-test, t-test, ANOVA, F-test, regression
Pages: 4 (1000 words), Article
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Outliers in a statistical analysis
Estimators that are capable of managing outliers are always robust.In cases where the distribution of data is normal, the 3 sigma rule implies that an estimate of one in twenty two observations will vary by two times the standard deviation or more times from the mean. In one in 370 will vary by 3 times the SD (standard deviation) for details. Where there are a thousand observations, the probability of up to 5 observations differing from Mean by not less than 3 times the SD is inside the range
Pages: 8 (2000 words), Article
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