Define nominal, ordinal and ratio scaled variables?

A nominal variable is a generalization of the binary variable. Nominal variable has more than two states, For example, a nominal variable, color consists of four states, red, green, yellow, or black.

In Nominal variables the total number of states is N and it is denoted by letters, symbols or integers.

1. An ordinal variable also has more than two states but all these states are ordered in a meaningful sequence.

2. A ratio scaled variable makes positive measurements on a non-linear scale, such as exponential scale, using the formula

AeBt or Ae-Bt 

Where A and B are constants.

Rajiv Shah
Sep 24, 2021
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