4 Types of Measurement Scales

• is a measurement scale, in which numbers serve as “tags” or “labels” only, to identify or classify an object.

  nominal scale
• This measurement normally deals only with non numeric (quantitative) variables or where numbers have no value

  nominal scale
• An example of nominal scale is the level of measurement, e.g., degree of discomfort (1-mild, 2-moderate, 3-severe)

  the 123 are just tags
• reports the ranking and ordering of the data without actually establishing the degree of variation between them

  ordinal scale
• Ordinal level of measurement is the second of the four measurement scales.
• “Ordinal” indicates “order”.
• Ordinal data is quantitative data which have naturally occurring orders and the difference between is unknown.
• It can be named, grouped and also ranked.

  ordinal scale
• is defined as a numerical scale where the order of the variables is known as well as the difference between these variables

  interval scale
• Mean, median, mode can be used to calculate the central tendency in the interval scale.
• The only drawback of this scale is that there no pre-decided starting point or a true zero value.

  interval scale
• Example of ordinal is "how satisfied are you with our products?" (1-totally dissatisfied, 2-dissatisfied, 3- satisfied, 4, very satisfied)
• The classic example of an interval scale is Celsius temperature because the difference between each value is the same.
• identify the direction and magnitude of differences and allow ratio comparisons of measurements

  ratio scale
• this scale is mostly used for experimental research

  ratio scale