HRS 610 Lecture Notes - Lecture 6: Odometer, Consumer Reports
2 Sep 2016
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Four scales of measurement: nominal scale, ordinal scale, interval scale, ratio scale. Examples: fahrenheit and celsius thermometers: it is possible to determine the magnitude of differences between values on the scale, there is no true zero on an interval scale, example It is possible to say that an iq score of 100 is midway between a score of 90 and a score of 110. Also, the interval between 90 and 95 is equivalent to the interval between 100 and 105. However, it is not possible to say that a person with an iq of 200 is two times more intelligent than a person with an iq of 100. Ratio scale: highest level of measurement scale, this scale has a true zero point as well as equal intervals, it allows you to say something is twice as good as something else.
