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Activity #6: Discrete Random Variables
Activity #6: Discrete Random Variables

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... Gastric freezing was once a treatment for ulcers. Patients would swallow a deflated balloon with tubes, and a cold liquid would be pumped for an hour to cool the stomach and reduce acid production, thus relieving ulcer pain. The treatment was shown to be safe, significantly reducing ulcer pain, and ...
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... 1. For women aged 18-24, systolic blood pressures (in mm Hg) are normally Distributed with a mean of 114.8 and a standard deviation of 13.1 (based on data From the national Health Survey). a. If a woman between the ages of 18 and 24 is randomly selected, find the probability that her systolic blood ...
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Empirical Rule - Cobb Learning

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... events occurring can be determined. For Gaussian distribution in 1-D; P(|x|<1) = 0.68; P(|x|<2) = 0.955; P(|x|<3) = 0.9974. • Conceptually, people thing of standard deviations in terms of probability of events occurring (ie. 68% of values should be within 1-sigma). ...
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251descr1 - On-line Web Courses

... unimodal. Of all the measures of central tendency, the mode is the most resistant to a few very high numbers and the mean is least resistant. Populations made up of data like wealth and income almost always have a few outliers to the right of most of the data. They tend to be cut off on the left by ...
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[17] Ross M, Mahfouz R, Onciu M, et al. Gene expression profiling of
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... quantitative measurements for the expression of thousands of genes. DNA microarrays have been used to assess gene expression between groups of cells of different organs or different populations. In order to understand the role and function of the genes, one needs the complete information about their ...
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History of statistics

The History of statistics can be said to start around 1749 although, over time, there have been changes to the interpretation of the word statistics. In early times, the meaning was restricted to information about states. This was later extended to include all collections of information of all types, and later still it was extended to include the analysis and interpretation of such data. In modern terms, ""statistics"" means both sets of collected information, as in national accounts and temperature records, and analytical work which requires statistical inference.Statistical activities are often associated with models expressed using probabilities, and require probability theory for them to be put on a firm theoretical basis: see History of probability.A number of statistical concepts have had an important impact on a wide range of sciences. These include the design of experiments and approaches to statistical inference such as Bayesian inference, each of which can be considered to have their own sequence in the development of the ideas underlying modern statistics.
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