probability for continuous variables

probability density function (or prob. distribution)

probabilities associated with continuous variables

- functionally defined curves

- geometric shape with an area (34% > 13.5% > 2.5%)

PDFs used in statistics

- defined by its own function that uses certain parameters

- has properties associated with it

- all kinds of diff shapes

normal distribution

PDF with a particular set of properties that are always true

- symmetrical and mesokurtic (g1 = 0, g2 = 0)

- unimodal

- mean +/- SD = inflection points

z-metric

universal metric for a normal distribution

z-scores

raw values that have been linearly transformed into z-metric

- standard deviation units (if SD = 15 and one is 15 points away from mean, z = 1)

z-distribution (standard unit normal distribution)

normal distribution of raw values that have been linearly transformed into z-metric

z-table

catalog of all the proportions of area (slices) under the curve