Probability - Math 252

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Probability - Math 252

How is probability determined?

Probability is determined by calculating the theoretical and expiremental probability of a given event.

What is probabiliy?

Probability is the measurement of how probable an event is.

Types of Probability

Expiremental Probability

Expiremental probability is the probability of an event and is the ratio of the number of times the event occurs to the total number of trials.

P(E)= R/N

Theoretical Probability

P= n(e)/n(s)

Theoretical probabiliity is the likelihood that an event will happen.

Terminology

"And"= multiply "Or"= add

Example Problem

If we toss a fair coin, what is the probability that a tail will show up? Event: 10 times, 29 people, landed on tails 150 times When you toss a coin there are only 2 possible outcomes: a Head or a Tail So the options for tossing a tail are 1 out of 2. P(tail) = 1/2 = 50% P(event) = 150/290 = 51.7%

Resources

Learning Reviews is a website that reviews probability, has lesson plans and games that would appeal to young students. http://www.learningreviews.com/Probability-Games-Lessons-for-Kids.html

Basic Skills is a website that has a variety of fun and interactive games for all ages invovlivng probability. http://classroom.jc-schools.net/basic/math-prob.html

Math Goodies is a website that introduces probability and teaches how to calculate it. http://www.mathgoodies.com/lessons/vol6/intro_probability.html