Four Types of Probability
Not what you're looking for?
Explain in detail and give an original example of the four types of probability.
1) Marginal probability
2) Union probability
3) Joint probability
4) Conditional probability
Purchase this Solution
Solution Summary
Four types of probability are examined. The marginal, union, joint and conditional probability is analyzed.
Solution Preview
All of these involve probabilities of two (or more) variables or events. The two variables (let's call them x and y) can be independent or not.
1) Marginal probability P(x)
This is the probability of x, over all possible y's. If x is some event, you would find it by dividing the number of times x occurred by the total number of observations. You wouldn't consider what y did during that same time.
2) Union probability P(x or y)
This is the probability that either x or y or both will occur. If x and y are events A and B, then the union probability is the sum of the two events minus the joint probability:
P(A or B) = P(A) + ...
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.