Lecture 1.4 - Introduction and Types of Data - Scales of measurement

Prof. Usha Mohan
Department of Management Studies
IIT Madras


Learning outcomes:
1. Know the scales of measurement and its importance in summarizing the variables.
2. Identify different types of scales of measurement, i.e., nominal, ordinal, interval, and ratio.
3. Differentiate between the nominal and ordinal scales, given categorical data.
4. Differentiate between the interval and ratio scales, given numerical data.
5. Differentiate between ordinal and interval scale.
6. Understand why the ratio of two values is not meaningful in the case of an interval scale.
7. Have clarity on which arithmetic operations are possible on different scales. IIT Madras welcomes you to the world’s first BSc Degree program in Programming and Data Science. This program was designed for students and working professionals from various educational backgrounds and different age groups to give them an opportunity to study from IIT Madras without having to write the JEE. Through our online programs, we help our learners to get access to a world-class curriculum in Data Science and Programming.

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