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The measurement consisting of counting the number of units or parts of units displayed by objects and phenomena is called measurement scale.
Following are the different types of measurement scale.
1) Normal Scale:
It is simplest and lowest level of measurement scale. It is simply a system of assigning number or the symbols to objects or events o distinguish one from another in order to label them. The symbols or numbers have no numerical meaning. The athematic operations cannot be sed for these numerals.
2) Ordinal Scale:
The second and the lowest level of ordered scale is the ordinal scale. It is the quantification of items by ranking. In this scale, the gaps between the positions of the numerals are not made equal. It represents quantitative values in ascending or descending order.
3) Interval Scale:
In addition to ordering the data, this scale uses equidistant units to measure the difference between the scores. It assumes data has equal intervals. This scale does not have absolute zero but only arbitrary zero. Interval scale is developed from ordinary scale.
4) Ratio Scale:
It is the ideal scale and an extended from of interval scale. It is most powerful scale of measurement. It possesses the characteristics of nominal, ordinal and interval scale. Ratio Scale has an absolute zero or true zero or nominal zero of measurement.
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