Criteria for defining scale of measurements.

[Aman Kumar]

Is it always the case that categorical values obtain either ordinal / nominal scale of measurement and numerical values obtain ratio / interval scale of measurement ? 

[Nitin Kumar Jha]

Hi,

If a variable is categorical then it will have either nominal scale or ordinal scale and if the variable is numerical variable then it will have either interval or ratio scale.

Thanks and regards

Nitin Kumar Jha

Content support team

[Sherlock Holmes]

sir please answer my query , since comments and feed back are unstructured data , they shall possess no category and hence if such a column ( Feedback)is present in the table , we  shall not count it as categorical ,right?

[Nitin Kumar Jha]

We never classify unstructured data into either of the variable types.

Classification of the variable is done on the basis of nature of informations that variable have and unstructured data do not contain any same nature within its values.

Regards

Nitin Kumar Jha

[Sherlock Holmes]

Thank you sir, with respect to this is serial number column  a nominal categorical variable or an ordinal variable?

[Nitin Kumar Jha]

Serial numbers has a definite order within values, therefore it falls into ordinal scale of measurement.

Regards

Nitin Kumar Jha

[Sherlock Holmes]

Thank you so much sir, its all clear now :):)

[Hemant Bardia]

Arent't serial number just like jersey number because they have no meaning of themselves alone?

so shouldn't it be nominal because moreover its nothing more than a tag