Continuous
discrete
Discrete random variable
The number of students is discrete. There is no number of students between 4 and 5.
A random variable such as the number of keys on each student's key chain is discrete because you can list the possible values it can assume. If it was continuous one would not be list a continuous random variable because it would be impossible. The keys on the key chains would be discrete.
A discrete graph.
It is discrete.
The number of years is discrete.
Discrete. You cannot have 1.25 homicides!
discrete
discrete
Discrete random variable
The number of students is discrete. There is no number of students between 4 and 5.
Discrete. You cannot have 3.76... rooms!
discrete it is always discrete
Discrete.
Either fog occurs on a day, or it does not. Therefore it is a discrete value.
A continuous variable is one that can take any value within an interval (or a set of intervals). A discrete variable is one that can only take certain values.Some further notes:* Often a discrete variable takes integer values, but that is not necessary.* Neither discrete nor continuous variables need be limited to a finite number of possible values.* Frequently, continuous variables are continuous only in principle, and the measuring instruments or recording make them discrete. Eg your height is continuous but as soon as it is recorded as 1.75 cm or 5'9", it is made discrete.