Measurement Scales
nNominal
scale
ndifference only,
numbers have no quantitative value
nEx: 1 = female, 2 =
male
nOrdinal
scale
nrank order, numbers
are greater than or less than
n1 = best, 2 =
better, 3 = good
nInterval
scale
nequal intervals,
distance between numbers is equal
nInch marks on a
ruler
nRatio scale
ntrue zero point,
absence or presence of variable
nweight, height,
temperature (Kelvin scale)