Sunday, February 5, 2012

Type of scale and Types of measurement scales


1. Construct a semantic differential scale to assess the properties of a particular brand of coffee or tea.


Semantic Differential Scale for Good Brew Tea Bags

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Fine  Flavour        8        7        6        5        4         3         2         1    No Flavour

Smooth Brew     8        7        6        5        4         3         2         1      Thick Brew

Good Taste        8        7        6        5        4         3         2         1      Distasteful

Lifts the spirit      8        7        6        5        4         3         2         1     Depresses

Gives Energy      8        7        6        5        4         3         2         1     Debilitates

  
2. Describe the four types of measurement scales.

The four scales are nominal, ordinal, interval, and ratio.

  1. The nominal scale separates individuals or items into categories -- e.g. seniors and juniors. 
  2. The ordinal scale helps to rank order the separated items. 
  3. The interval scale helps to determine the extent to which the items are different from each other. In other words, is the difference between item 1 and 2 the same as the difference between 4 and 5?   
  4. The ratio scale helps to determine the proportion of differences among items since it has an absolute zero origin, and is the most powerful of the four scales.

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