A discrete variable is a variable which may take only certain discrete values; for example the number of people in a household is a discrete variable which may have the value 1, 2, 3, etc. but cannot have intermediate values such as 1.473 or 3.732.
Choice d) can be represented by a discrete probability distribution, the other choices cannot be so represented.
I pretty sure the best answer would be f(x)=cbrt(27-x)
cbrt means cube root by the way.
The answer to this question is 5.2
The answer would be D) because its true and the difference is -0.2.
