Applicable Mathematics/Univariate Data

univarite statistics
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)