stats exam 1: levels of measurement

nominal, ordinal, interval, ratio

what are the 4 levels of measurement

nominal

lowest level, exclusive and exhaustive, NO ORDER

gender, race

example of nominal measurement

ordinal

exclusive and exhasutive, rank, order BUT we do not know exactly how much higher they are

nominal

what level can we do mode with?

ordinal

what level can we do median with?

Nonparametric (distribution free) analysis techniques

used to analyze nominal and ordinal level variables to examine relationships

interval

distance between intervals are numerically equal, no absolute 0 (can go below), continuous

temperature

example of interval measurement

ratio

highest, numerically equal intervals, IS an absolute 0 (cannot go below), continuous

pulse, blood pressure

example of ratio measurement

parametric statistics

analysis technique for interval and ratio data, describes relationships among groups

significant results

* or p value is less than or equal to 0.05