Full Answer Section

Ordinal Level of Measurement

Article: [Link to a relevant article, e.g., a survey on satisfaction]

Example: Level of Satisfaction (Very Satisfied, Satisfied, Neutral, Dissatisfied, Very Dissatisfied)

• Why Ordinal? This variable has categories with a clear order, but the difference between categories is not equal. For example, the difference between “Very Satisfied” and “Satisfied” might not be the same as the difference between “Satisfied” and “Neutral.”

Interval Level of Measurement

Article: [Link to a relevant article, e.g., a study on temperature]

Example: Temperature (measured in Celsius or Fahrenheit)

• Why Interval? This variable has equal intervals between values, but there’s no true zero point. For instance, 0 degrees Celsius doesn’t mean the absence of temperature.

Ratio Level of Measurement

Article: [Link to a relevant article, e.g., a study on weight or height]

Example: Height (measured in centimeters)

• Why Ratio? This variable has a true zero point, meaning zero height indicates no height. Additionally, the intervals between values are equal. For example, the difference between 150 cm and 160 cm is the same as the difference between 170 cm and 180 cm.

Note: To find specific articles, you can use academic databases like JSTOR, Google Scholar, or PubMed. Be sure to use relevant keywords to refine your search. For example, to find articles on psychological research, you might search for terms like “psychological measurement,” “psychometrics,” or “scale development.“

Tips for Finding Relevant Articles:

1. Identify Keywords: Use relevant keywords to search for articles, such as “level of measurement,” “nominal data,” “ordinal data,” “interval data,” and “ratio data.”
2. Utilize Academic Databases: Search reputable databases like JSTOR, Google Scholar, PubMed, or PsycINFO.
3. Refine Your Search: Use filters to narrow down your search results by publication date, journal, or subject area.
4. Read the Methodology Section: Pay close attention to the measurement section of research articles to identify the level of measurement used for different variables.

By following these tips and using the provided examples, you can effectively identify and analyze different levels of measurement in research articles.