Ordinal Scale

1
Ordinal Scale

• Ranks data in some order
• eg exercising for 20 minutes is good, for 30
  minutes is better, for 40 minutes is best.

2
Interval Scale
3
Interval Scale

• Sets data on a continuum eg

4
Ratio Scale
5
Ratio Scale

• Starts with absolute zero and indicates
  proportion eg

Ten is twice as big as five
6
Properties of Measurement Scales
7
Power of the Scales

• Whenever it is possible to use a more powerful
  scale than a less powerful one, it is wise to do
  so
• With more powerful scales, increasingly
  sophisticated statistical analyses can be
  performed
• Which in turn means that more meaningful answers
  can be found to your research questions

8
Categorical and Continuous Variables
9
(No Transcript)