Year of birth is interval level of measurement; age is ratio.
Grade scores are an ordinal level of measurement. A ratio level of measurement would be weight of a person or how much money a person has.
interval
It's Ratio.
False
The whole point of a nominal variable is that is has no numerical value associated with it. With a binary measure you can allocated the values 1 and 0 or +1 and -1 for observations where the attribute is present or absent. If there are more than 2 values that the nominal variable can take then you can allocate any numbers that you want but in all cases the numbers do not have a value: they are simply symbols which can help for sorting and for binary comparisons.
nominal
Neither, age is at a ratio level of measurement.
Gender is nominal. Nominal is categorical only; no ordering scheme. Ordinal level of measurement places some order on the data, but the differences between the data can't be determined or are meaningless.
no. its a limitation of an ordinal variable not a nominal.
Questionnaires typically use nominal, ordinal, interval, or ratio levels of measurement. The level of measurement chosen depends on the specific type of data being collected and the research objectives.
I've included a couple of links which should explain better the differences among the four levels of measurement: Nominal, Ordinal, Interval and Ratio. The nominal level can be thought of as the "name" level. I'll give you an example of nominal level of measurement. Perhaps you are collecting data on the types of cars that go through an intersection. You classify the vehicles passing by as trucks, cars and motorcycles and count how many of each pass by. Ordinal is the "order" level, where some natural order of data is possible. The difference between measurements has no physical meaning. An example of ordinal level of measurement. A hospital asks in the emergency room, for patients to describe their pain on a level of 1 to 10, which 10 being the most severe. As given in the first link, it is interesting that there is not complete agreement on this system of classification.
At least ordinal
It is ratio; it has a natural zero and is numerical data.
That would be a nominal measurement.
nominal
It is nominal.
Ordinal