Differences make sense. Till What is a nominal variable? A more detailed discussion of these scales can be found in Chapter 4 of the text. Ordinal Scale Level Data that is measured using an ordinal scale is similar to nominal scale data but there is a big difference. Some calculations generate numbers that are artificially precise. Data can be classified into four levels of measurement. Nominal scale data are not ordered.
A quick overview video on three different levels of measurement — nominal, ordinal, and interval-ratio variables. The level of measurement is about how each variable is measured — qualitative or quantitative — and how precise each variable is. Not all statistical techniques and methods can be used to all variables. The levels of measurement help us determine what statistical technique is appropriate to use. For example, if the level of measurement of your variable is nominal the least precise and informative variable, you can use mode to summarize your variable, but not median or mean. Search the Library Web Site Search. Levels of Measurement: Overview Understand the levels of measurement. Level 1: Definition of Levels of Measurement. Level 1: Concepts and Properties of Levels of Measurement. This video explains the following: What is a variable?
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The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. Not every statistical operation can be used with every set of data. Data can be classified into four levels of measurement. They are from lowest to highest level . Data that is measured using a nominal scale is qualitative. Categories, colors, names, labels and favorite foods along with yes or no responses are examples of nominal level data. Nominal scale data are not ordered. Nominal scale data cannot be used in calculations.
One of the most influential distinctions made in the field of measurement was Stevens’ , classification of scales of measurement. He described nominal, ordinal, interval, and ratio scales of measurement, which are briefly defined below. A more detailed discussion of these scales can be found in Chapter 4 of the text.