- Thread starter ThimoDS
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Howdy! It may be useful to start with the definitions.

What is the meaning of a variable that is measured on the interval scale? How about on the ratio scale?

What is the meaning of a variable that is measured on the interval scale? How about on the ratio scale?

As I was taught, interval scaled data is quantitative data in which differences have a meaning (so for example when you add +1 it always adds the same), but ratios don't mean anything (so for example doubling doesn't mean anything) and there's no fixed 0. We saw temperature as an example (difference between 20-21 and 70-71 degrees is the same 1 degree, but 20 degrees isn't "twice as cold" as 10 degrees and 0 degrees does not mean an "absence of temperature". Ratio is also quantitative data, but there's a fixed 0 and ratio's do make sense.

Kind regards

We saw temperature as an example (difference between 20-21 and 70-71 degrees is the same 1 degree, but 20 degrees isn't "twice as cold" as 10 degrees and 0 degrees does not mean an "absence of temperature".

Is this ratio-scaled data?

What do you need the answer for?

With kind regards

Karabiner

Not if you mean *degrees Kelvin*. (SCNR)

It depends on what is actually measured, and what it is intended to represent.. If the scores just mean "number of correct answers", then you could perform operations for ratio scales. If it represents "intellectual capability in field X" or something like this, a zero value probably would not mean Zero capability. The same as there's no zero intelligence, even if there are people who are not able to give just 1 correct response in an intelligence test.

What do you need the answer for?

With kind regards

Karabiner

It depends on what is actually measured, and what it is intended to represent.. If the scores just mean "number of correct answers", then you could perform operations for ratio scales. If it represents "intellectual capability in field X" or something like this, a zero value probably would not mean Zero capability. The same as there's no zero intelligence, even if there are people who are not able to give just 1 correct response in an intelligence test.

What do you need the answer for?

With kind regards

Karabiner

I was indeed talking about degrees celcius, should have mentioned that!

Thanks for your answer, it's very clear to me now. The distinction between number of correct answers and something like an IQ score is indeed a difference I did not immediately notice.

I don't need it for anything particular, I was practicing for an exam next Wednesday and was making some exercises I found online.

Thanks you very much and kind regards

But not if you mean *degrees Kelvin*. (SCNR)

It depends on what is actually measured, and what it is intended to represent.. If the scores just mean "number of correct answers", then you could perform operations for ratio scales. If it represents "intellectual capability in field X" or something like this, a zero value probably would not mean Zero capability. The same as there's no zero intelligence, even if there are people who are not able to give just 1 correct response in an intelligence test.

What do you need the answer for?

With kind regards

Karabiner

It depends on what is actually measured, and what it is intended to represent.. If the scores just mean "number of correct answers", then you could perform operations for ratio scales. If it represents "intellectual capability in field X" or something like this, a zero value probably would not mean Zero capability. The same as there's no zero intelligence, even if there are people who are not able to give just 1 correct response in an intelligence test.

What do you need the answer for?

With kind regards

Karabiner

If this is just simply a number of correct responses out of 20, this can be ratio.