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Summary of Elementary Statistics

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This is a summary of elementary statistics concepts. It may become an article.

random variable
measurement
levels of measurement
sample
sample size n =
category
frequency
relative frequency
histogram uniform repartitioning of categories
dotplot an alternative to a histogram for small sample sizes
mode (categorical), (ordinal)
scale free independent of axis scaling
mean (quantitative)
deviation
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robust

Order Statistics

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order statistic (ordinal)
min
first quartile
median
third quartile
max
interquartile range
lower fence
upper fence
outlier lower fence, upper fence
box plot
modified box plot
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