Applicable Mathematics/Univariate Data

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univarite statistics[edit]

a basic introduction (not complete)

\Sigma: "sigma" which means "sum of"

example:

\sum_{i=2}^{4} 1 \times i

(considering numbers 1 to 10)

sum of numbers from 2 to 4 by factor of 1 (1 \times i)

4

Σ 1xi = 2 + 3 + 4 = 9

i=2


the mean (X) = sum of all scores / number of scores = Σx / n


also:

standard deviation (§)

variance (v)(§2)

box plots

-quartiles

stem plots

class limits, boundaries, classmarks

transformations on data sets

Standard scores (z)