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When you are finding the
probability of one thing that happens, it is called a simple event. Finding the
probability of a simple event is when you use the formula:
The picture above shows green, yellow, and blue marbles. If you put all of the marbles in a bag and drew one out, we could find the probability of pulling out each of the colors. Pulling one marble out is a simple event. If we wanted to know the probablility of pulling out a green marble, we would count how many green marbles there are (7), and put that number over the total number of marbles (22). There is a 7/22 or a 7 out of 22 chance you would pull out a green marble in a simple event.
Read about this explanation of probability by Dr. Math. The second section down talks about the probability of selecting marbles. It should give you a better understanding of a simple event.
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number of outcomes that
can
occur to give you what you are trying to do
number of possible
outcomes.
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The picture above shows green, yellow, and blue marbles. If you put all of the marbles in a bag and drew one out, we could find the probability of pulling out each of the colors. Pulling one marble out is a simple event. If we wanted to know the probablility of pulling out a green marble, we would count how many green marbles there are (7), and put that number over the total number of marbles (22). There is a 7/22 or a 7 out of 22 chance you would pull out a green marble in a simple event.
Read about this explanation of probability by Dr. Math. The second section down talks about the probability of selecting marbles. It should give you a better understanding of a simple event.
