Question

Which one of the following variables is a continuous variable?

a. The number of people on a bus.
b. The number of computers in a computer room in a school.
c. The height of Year 12 students in a high school.
d. The score out of 90 for a test.

Answer 1

c.

Explanation:

as this can take on any value (with as many digits after the decimal point as necessary) between certain interval limits.

all the others are usually either pure integers (and every real number in between them is not valid) or at most have finite fractions (like 1/2 or 1/4 points for scores, and between these no value is valid).