Correct option is D
Ans. (d)
Sol. The
Likert scale is also known as a
Summated Scale because it consists of multiple
statement-based items, each rated on a
fixed scale (e.g., 1-5 or 1-7), and the scores from all items are
summed up to get a total score. This scale is widely used in
survey research to measure
attitudes, opinions, and perceptions.
Explanation of each option:
·
(a) Arbitrary scale –
Incorrect. Arbitrary scales are
constructed based on personal judgment, without a structured approach like the Likert scale.
·
(b) Differential scale –
Incorrect. The differential scale, such as the
Semantic Differential Scale, measures attitudes based on
opposing adjectives (e.g., good-bad, happy-sad).
·
(c) Cumulative scale –
Incorrect. A cumulative scale (such as the
Guttman scale) arranges statements in increasing order of agreement, where a higher agreement implies agreement with lower-ranked items.
·
(d) Summated scale –
Correct. The
Likert scale is a summated scale because responses to individual items are summed to produce an overall score.
Thus, the correct answer is
(d) Summated scale, as the
Likert scale aggregates individual item scores to measure attitudes or opinions.