Census- When information about every member of the population is collected.

Complementary events- Two outcomes of an event that are the only two possible outcomes.

Compound events- Involves finding the probability of more than one event occurring at the same time.

Data- It is a collection of facts.

Examples: Numbers, Words, Measurements

Deviation from the mean- The average of absolute differences.

Examples: 1, 2, 3, 4 and 5 is (15 / 5) or 3.

Dot Plot- A chart of data plots on a simple scale

Equally likely- Events that have the same probability of occurring

Event- a thing that happens, especially one of importance.

Experiment- a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Experimental probability- is the ratio of the number of times an event occurs to the total number of trials or times the activity is performed

Mean- The mean is the average of the numbers

Mean absolute- a data set is the average distance between each data value and the mean

Median- is the "middle" value in the list of numbers

Mode- The number which appears most often in a set of numbers

Out come- is a result of an event that depends on probability, and any event can have more than one possible outcome.

Parameter- is a quantity that influences the output or behavior of a mathematical object but is viewed as being held constant.

Population-is a discrete group of people, animals or things that can be identified by at least one common characteristic for the purposes of data collection and analysis.

Probability- the number of ways of achieving success. the total number of possible outcomes

Probability model- representation of a random phenomenon