Scales Measurement

Question 1

4 kinds of statistical scales

Answer 1

Nominal, ordinal, interval and ratio scales

NOIR

Question 2

Def Nominal Scale

Answer 2

lowest scale of measurement
Used to “name”

deals with qualitative data not quantitative data..
property = identity
no value difference between variables….
cannot add or avg..
good for comparisons ….how many of something…

Eg. country of birth

Question 3

Def Ordinal Scale

Answer 3

deals with data that can be ordered or ranked....
ex: olympic race..... 1st , 2nd , 3rd
there are no in between numbers..
property: identity, magnitude..
A>B B>C ... A=F

Rankings such as likert scales

Question 4

Def Interval Scale

Answer 4

distance between ranked differences are =
Property: identity, magnitude, and interval properties..
zero is arbitrary.. No “true” 0
can: a-b=c ..c-d…a-b>c-d..
cant: do ratios no mult or divison…

Eg. Celsius temperature scale

Question 5

Def Ratio Scale

Answer 5

Interval with true zero point….
score of zero = no amount of variable!
Property: identity, magnitude, equal interval and absolute zero!
can do all math operations…

Eg. Height

Question 6

Def Discrete Variable

Answer 6

no possible values between adjacent units…
whole numbers units or categories…
cant have 3 and a half cats!
nominal and ordinal scales

Question 7

Def Continuous Variable

Answer 7

infinite possible values between adjacent units…

interval and ratio scales