Assertion (A) : Temperature measurement on a Centigrade scale is an example of interval scale.
Reason (R) : In an interval scale, the order of values is important and significant, but the difference between the categories is not really known.
Assertion (A) Analysis: Centigrade Temperature as Interval Scale
The statement asserts that temperature measurement on a Centigrade scale is an example of an interval scale.
- Order: Centigrade scale has a meaningful order (e.g., 20°C is warmer than 10°C).
- Equal Intervals: The difference between degrees Celsius is constant and meaningful. The interval between 10°C and 20°C is the same as between 30°C and 40°C (both are 10°C).
- True Zero: The Centigrade scale has an arbitrary zero point (freezing point of water, 0°C), not a true absence of temperature.
These characteristics align with the definition of an interval scale. Therefore, Assertion (A) is correct.
Reason (R) Analysis: Interval Scale Properties
The reason states that in an interval scale, "the order of values is important and significant, but the difference between the categories is not really known."
- The first part, "the order of values is important and significant," is true for interval scales.
- However, the second part, "the difference between the categories is not really known," is incorrect. A defining feature of interval scales is precisely that the differences between values are known and equal (e.g., the 10°C difference).
Therefore, Reason (R) is incorrect.
Conclusion
Based on the analysis, Assertion (A) is correct, and Reason (R) is incorrect.
Thus, the correct option is that (A) is correct, but (R) is incorrect.
Important Questions from Types of Measurement Scale - Teaching
- A teacher assesses the answer books of the students and based on their scores he gives them ranks. Which scales of measurement are used by him?
- Match the LIST-I with LIST-II
LIST-I Measurement scale LIST-II Definition A. Likert Scale I. Measures the meanings people create in response to a particular stimulus B. Semantic Differential scale II. Equal appearing intervals between adjacent points of a measurement scale C. Thurstone Scale III. Identifies the extent of a person's attitude towards a person or phenomenon D. Guttman Scale IV. Items are arranged along a continuum
Choose the correct answer from the options given below: - Which one of the following is the lowest level of measurement?
- Arrange the following from higher level to lower level of scales of measurement involved in them:
A. Researcher divides the sample in two groups based on area of residence like 'Urban' and 'Rural' Area.
B. A student has got 50 marks out of 60 marks in English language test.
C. A cricketer is given tenth rank as an allrounder.
D. The height of a particular building is double than all other buildings in a street.
Choose the correct answer from the options given below: - Match the LIST-I with LIST-II
LIST-I
Scales of
MeasurementLIST-II
CharacteristicsA. Nominal I. Place items from least to most or lowest to highest B. Ordinal II. Precisely how far apart the items are C. Ratio III. Denotes the categories only D. Interval IV. Enables researcher to determine the proportions easily
Choose the correct answer from the options given below:
