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14 • Representing and interpreting data
14 • Representing and interpreting data

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Chapter 7 Hypothesis Testing
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... Example: A newspaper article noted that the mean life span for 35 male symphony conductors was 73.4 years, in contrast to the mean of 69.5 years for males in the general population. Test the claim that there is a difference. Assume a standard deviation of 8.7 years. ...
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Hypothesis Testing - University of Bristol

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This curriculum is designed with the Common Core Instructional

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... 3. The subjects are independent. Since in a within-subject design, responses coming from the same subject are not usually independent, assumption three must be modified for responses within a subject. The independence between subjects is still assumed. 4. The within-subject covariance matrices are e ...
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Testing that distributions are close ∗ Tu˘ gkan Batu

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Business Statistics: A Decision

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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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