###
Theoretical Probability

Probability based upon what should happen.

###
Experimental Probability

Probability based upon data collected.

###
Odds in Favor

The ratio of the favorable outcomes to the unfavorable outcomes.

###
Odds Against

The ratio of the unfavorable outcomes to the favorable outcomes.

###
Population

Any group of objects or people in a survey.

###
Sample

Is a part of the population.

###
Random Sample

Each object or person in the population has the same chance of being selected.

###
Biased Questions

Unfair questions in a survey that may influence your response.

###
Independent Events

Events that do not influence each other (the occurrence of one does not affect the probability of the second.)

###
Dependent Events

Events that influence on another (the occurrence of one affects the probability of the second.)

###
Permutation

An arrangement of a set of items in a particular order.

###
Factorial

The product of all positive integers less than or equal to a number (uses the "!" symbol.)

###
Combination

A group of items in which the order of the items is not considered.

### Please allow access to your computer’s microphone to use Voice Recording.

## We can’t access your microphone!

### Click the icon above to update your browser permissions and try again

Example:

### Reload the page to try again!

Reload

## Press Cmd-0 to reset your zoom

## Press Ctrl-0 to reset your zoom

### It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

## Your microphone is muted

### For help fixing this issue, see this FAQ.