Summary of Types of Measurement Scales-Nominal Scale Ordinal Scale Interval Scale Ratio Scale

The video discusses four types of Measurement Scales used in Research: nominal, ordinal, interval, and ratio scales. Each scale has distinct characteristics, uses, and limitations.

Main Ideas and Concepts:

• Definition of Scale:

  A scale is a defined device or tool used to measure and quantify variables in Research.

• Types of Measurement Scales:
  • Nominal Scale:
    • Used to categorize data into mutually exclusive categories.
    • Numbers serve as identifiers or labels (e.g., jersey numbers of players).
    • Cannot perform mathematical operations (addition, subtraction, etc.) on the data.
    • No inherent order or ranking among categories.
  • Ordinal Scale:
    • Used to rank variables in a natural order (e.g., class rankings, customer satisfaction ratings).
    • Allows for ordering and ranking but does not provide information about the intervals between ranks.
    • Example: Ranking students based on performance or customer satisfaction ratings.
  • Interval Scale:
    • Measures data with equal intervals between points but lacks a true zero point (e.g., Temperature).
    • Allows for the identification of the intervals between data points.
    • Example: Temperature scales where zero is arbitrary and can be negative.
  • Ratio Scale:
    • Incorporates properties of all previous scales and has a true zero point.
    • Allows for all mathematical operations (addition, subtraction, multiplication, division).
    • Examples include weight, height, and distance, where negative values are not possible.

Methodology/Instructions:

• Understand the characteristics of each scale to choose the appropriate one for measuring variables in Research.
• Recognize that:
  • Nominal: Categorization without order.
  • Ordinal: Ranking without known intervals.
  • Interval: Equal intervals without a true zero.
  • Ratio: True zero with all mathematical operations possible.

Speakers/Sources:

The video does not specify individual speakers but presents a general overview of Measurement Scales in Research.

Notable Quotes

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Category

Educational

Video