Levels of Measurement
- Created by: Iggle Piggle
- Created on: 21-03-17 09:40
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- Levels of Measurement
- Ratio
- There is a true zero, as in most measures of physical quantities.
- e.g. The number of people who's favorite colour is blue.
- It is possible for ratio data to be 1.5. But not interval
- It is possible for interval data to be -2. But not ratio.
- Advantage: You can calculate mean, medium, mode, and range.
- Interval
- Ratio
- There is a true zero, as in most measures of physical quantities.
- e.g. The number of people who's favorite colour is blue.
- It is possible for ratio data to be 1.5. But not interval
- It is possible for interval data to be -2. But not ratio.
- Advantage: You can calculate mean, medium, mode, and range.
- Interval
- Data measured using units of equal intervals.
- Interval
- Data measured using units of equal intervals.
- Ratio
- Interval
- Ordinal
- The data is ordered.
- e.g.Horse Peanut: 1st place, Butterscotch: 2nd place, Daisy: 3rd place
- Their may be a larger difference between 1st place horse and 2nd place, compared to the diffrence between 2nd and 3rd.
- Disadvantage:Does not measure the distance between the orders.
- Their may be a larger difference between 1st place horse and 2nd place, compared to the diffrence between 2nd and 3rd.
- Nominal
- Do we have categories in which there are frequencies of people where we can't seperate the people within each category because we know no more about them?
- Sometimes putting things into categories takes a lot of operationalization.
- e.g. writing a list of "agressive behavior"s before observational study of a tv show.
- Data is in seperate categories.
- e.g. Grouping people according to their grades.
- Ratio
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