Levels of Measurement Flashcards
1
Q
What are the 4 levels of measurement?
A
- Nominal
- Ordinal
- Interval
- Ratio
3
Q
What are the characteristics of Ordinal scales?
A
- Ranked groups
- ordered along same dimension
- Each group listed has more of something than the previous one
- Ex: Top ten party schools, socio-economic status.
4
Q
What are the characteristics of Nominal scales?
A
- Classify into categories or groups
Categories must be:
- Mutually exclusive (only 1 category should fit each person)
- Exhaustive (all options should be present)
- Equivalent (same general level for all options)
- -Ex: Sex, Ethnicity, Religion
5
Q
What are the characteristics of Interval scales?
A
- Ordered
- But with equal intervals in between (The distance between the numbers are the same)
- Ex: SAT scores, standardized test scores.
6
Q
What measure of central tendency would you use for Nominal Scales?
A
Mode- most frequently occurring
7
Q
What are the characteristics of Ratio scales?
A
- Equidistant intervals with an absolute zero
- Ex: Texts sent per day, # of compliments.
8
Q
What measure of central tendency would you use for interval and ratio scales?
A
Mean, median or mode.
9
Q
What measure of central tendency would you use for ordinal scales?
A
Mode or Median (Middle Value)
10
Q
What are the characteristics of Ratio scales?
A
- Ordered
- With equal distance between intervals
- And, a meaningful zero (true zero that indicates absence of what is being measured)
- e.g., height or weight
11
Q
What measure of central tendency would you use for nominal scales?
A
Mode (the most frequently selected category)
