You usually use defined properties in the form of specific characteristics to assess the quality of a product. Technical statistics defines different types of scales for certain types of characteristics. It is even able to specify distribution models and associated characteristics.

1. Which characteristic follows a metric scale?

• Diameter in mm
• Article number
• Military ranks

2. Which characteristic follows an ordinal scale?

• Zip code
• School grade
• Calendar date

3. Which characteristic is inappropriate for the estimation of process location?

• Statistical value
• Moving average
• Median

4. Which characteristic is inappropriate for the estimation of process variation?

• Range
• Tolerance
• Standard deviation

Our Q-QUIZ is published once a month. You can find the answer to all questions in the PDF file below.

This quiz was originally published in the August issue 2016 of the German magazine QZ Qualität und Zuverlässigkeit (http://www.qz-online.de/).