Class Notes (807,076)
Canada (492,585)
PEDS109 (14)
John Dunn (14)

Sept 24 - Scales of Measurement.doc

3 Pages
Unlock Document

University of Alberta
Physical Education and Sport
John Dunn

Sept 24 – Scales Of Measurement Nominal Scale • Nominal scales have a set of categories with different names. There are no quantitative distinctions between observations/categories • The difference between categories or numbers is totally meaningless • The values are meaningless other than to identify there is a difference between categories • The only thing you can do with nominal data is frequency data (ex. So many people walked, so many people drove etc.) • We can assign values but the magnitude of the differences are meaningless • No – no numeric; minal 0 minimal use Ordinal Scale • As increase in numeric value, the order of the number is important • Ex. John finished a race n 1 , dave finishes in 2 , and mike finished in 3 . The numbers imply a rank order of performance. However the difference between 1 and 2 nd is meaningless in terms of magnitude. John could finish in 20:10 and dave could finish in 20:11 and mitke could finish in 27:45. In ordinal scale, the difference in time between first and second is meaningless • The order is implied but we don't know how much of a difference exists in the numbers • Ordinal implies the notion of rank order (mnemonic aid) • Provides order to our data, but other than that, we cannot make any inferences about the magnitude of the differences in numbers.. Interval Scale • most common interval scale is temperature • interval scales contain a set of ordered categories and the interval (difference) between each successive category is the same.. • ex. 0-1 degrees difference of 1 degree is the same difference of 1 degree in 20-21 degrees • interval scales don't possess an absolute zero point indicating a complete absence of the construct being measured • anything with an arbitraty zero point will be unable to use ratio comparison measurement (ex
More Less

Related notes for PEDS109

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.