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Levels of Measurement Scale: Nominal | Ordinal | Interval | Ratio Scales | Examples | Questions

1.8K views
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August 13, 2023
by
Solomon Getachew
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Levels of Measurement Scale: Nominal | Ordinal | Interval | Ratio Scales | Examples | Questions

TL;DR

Levels of measurement scale determine the precision and statistical tests applied in data analysis.

Transcript

hello everybody and welcome back to lesson 15 levels of measurement scale before moving to the main discussion let's define what measurement mean measurement is a process of assigning numbers to objects for specific set of attributes and it is used to transform the equality of attributes into numbers let's take a simple example if we want to measur... Read More

Key Insights

  • ⚾ Measurement is the process of assigning numbers to objects based on their attributes.
  • 🥳 There are four levels of measurement: nominal, ordinal, interval, and ratio.
  • ⚖️ Nominal scale is qualitative, ordinal scale introduces ranking, interval scale allows for meaningful comparisons but lacks a natural zero point, and ratio scale includes a true zero point.
  • 🏆 Descriptive statistics and non-parametric tests are suitable for nominal and ordinal scale data analysis.
  • 🥳 Parametric tests are more powerful and appropriate for interval and ratio scale data analysis.
  • 🏆 Different statistical tests can be applied based on the level of measurement.
  • 📈 Nominal and ordinal scale data can be represented using bar graphs and pie charts.

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Summary & Key Takeaways

  • Measurement is the process of assigning numbers to objects based on their attributes.

  • There are four types of levels of measurement: nominal, ordinal, interval, and ratio.

  • Nominal scale is qualitative and used for labeling categories, while ordinal scale introduces ranking.

  • Interval scale allows for meaningful comparisons, but lacks a natural zero point, and ratio scale includes a true zero point.


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