No, it is a continuous process but not a continuous variable.
The magnitude of star-shine, across all stars is a continuous variable. The magnitude of a star's shine over time is a continuous variable.
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I would have to say so, since there are fixed units assigned (stars and half stars) and a limited number of responses possible. If you could give any amount of stars ( like 2.923 stars) then it would not be a discrete variable.
stars in the sky that's the some example of infinite sets
A star is typically considered a regular object in astronomical terms, as it follows predictable patterns of formation, evolution, and behavior based on physical laws. However, some stars can exhibit irregularities in their brightness or behavior, such as variable stars, which may appear irregular in their light output. Overall, while stars are generally regular in their fundamental nature, certain types can display irregular characteristics.
because we use it to calculate/measure things in science for example we use maths to calculate the distance of stars from the earth
The product of four and a number would be algebraically written as 4n, or whatever variable equals the number. In this case, n = number. It would not be written n4, nx4, 4xn, 4*n or n*4, although n4 and the ones with stars may be accepted by a teacher.