411 REFERENCE · Wikibooks
Applicable Mathematics/Univariate Data
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
univarite statistics
a basic introduction (not complete)
: "sigma" which means "sum of"
example:
(considering numbers 1 to 10)
sum of numbers from 2 to 4 by factor of 1 ()
4
Σ 1xi = 2 + 3 + 4 = 9
i=2
the mean () = 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)