Variables Flashcards
1
Q
what is a variable?
A
A value whose quantity can be changed
2
Q
discrete variable
A
variable whose value is obtained by counting
3
Q
continuous variable
A
a value which is obtained my measuring
4
Q
what is a random variable
A
a variable whose value is a numerical outcome of a random phenomenon
denoted by capital X
5
Q
What is a probability distribution
A
a probability distribution defines the relationship between the outcomes and their probability of occurrence
6
Q
2 conditions of probabilities in the probability distribution of a random variable
A
they must add up to one
each value must be between 1 and 0
