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Levels Of Measurements In Statistics

Hello everybody.

Today I want to drop a short summary of different levels of measurrements in statistics.

It's represented in following table:

 

 

Difference

Order

Similar intervals

Meaningful zero point

Categorical

Nominal

+

-

-

-

Ordinal

+

+

-

-

Quantitative

Interval

+

+

+

-

Ratio

+

+

+

+