Rating Scale
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This document discusses different types of rating scales used to evaluate attributes of people or objects. It describes descriptive rating scales, numerical rating scales, graphic rating scales, and comparative rating scales. Descriptive rating scales provide phrases to describe traits, numerical scales assign code numbers, graphic scales use a line to indicate degrees of traits, and comparative scales define positions in terms of a population. The document also outlines principles for developing rating scales and notes they can be used to evaluate skills, products, activities, interests, attitudes, and personnel characteristics, but may decrease objectivity if misused.
Rating Scale
- 2. RATING SCALES A rating scale is a method that requires the rater to assign a value, sometimes numeric, to the rated object, as a measure of some rated attribute. Rating scales - Direct observation assessment of a person by another person.
- 3. TYPES OF RATING SCALE Descriptive rating scale Numerical rating scale Graphic rating scale Comparative rating scale
- 4. DESCRIPTIVE RATING SCALE Provide for each trait a list of descriptive phrases from which the rater selects the one most applicable item being rated, selected usually by means of a check mark.
- 5. NUMERICAL RATING SCALE Specific rating scale/ Specific category scale. The rater assigns a code numbers and approximate number to each trait of the person being rated or descriptive phases. Arranged in order of the degree, level, intensity or frequency with which they indicate possession or lack of occurrence of each trait.
- 6. GRAPHIC RATING SCALE The rater indicate the performer’s standing in respect to each trait by placing a check mark at an appropriate point along the line. Here, the degree of each characteristics is arranged so that the rater can make as fine distinctions as he wishes to make. This will help the rater to indicate his own preference.
- 8. COMPARATIVE RATING SCALE: The rater has clear knowledge of the activities of the given groups or individuals. The positions on the rating scale are explicitly defined it terms of a given population.
- 10. USES OF RATING SCALE To evaluate skills, product outcome, activities, interest attitude and personnel characteristics.
- 11. PRINCIPLES FOR PREPARING RATING SCALES It directly relates to learning objectives Needs to be confined to perform can be observed. Clearly define the specific trait or mode of behavior Allow some space in the rating scale card for the rater to give supplementary remark 3 to 7 rating positions may need to be provided. There should be provision to omit items, the teacher feels unqualified to judge.
- 12. ADVANTAGES Easy to administer and to score Can be used for a large group of students Clarity of feedback to students.
- 13. DISADVANTAGES Misuse can result in consequent decrease in objectivity It is difficult fix up rating It is unscientific or unreliable.