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# Unit 6 - Mr. Hunt

### Probability

TermDefinition
Probability Scale A number line going from 0 - 1 used compare probability of events happening.
Certain The word used for an outcome that will always happen
Likely The word used for an outcome that is between "even chance" and "certain".
Even Chance The word used for an outcome that will happen half the time.
Unlikely The word used for an outcome that is between "impossible" and "even chance".
Impossible The word used for an outcome that will never happen
notation A system of symbols used to represent special things.
Area Model A type of bar model that shows visually how likely an outcome will occur compared to other possible outcomes.
Tree Diagram A model that show all possible outcomes of a compound probability situation.
Frequency Chart A chart that gives how often each particular outcome happened.
Outcome the possible result of an experiment
Number of trials The number of time an experiment is conducted. Should be at least 20 in order to get an accurate picture of probability
Simple Probability A situation or experiment that has a single independent event occurring.
Compound Probability A situation or experiment that has two independent events occurring.
Theoretical/Mathematical Probability also known as calculated probability because is the fraction of a certain outcome occurring over all possible outcomes occurring
Experimental/Empirical Probability the fraction of a certain outcome that occurred from an experiment over the total number of times the experiment occurred
Sample Space a list of all possible outcomes of an experiment
Tally A way of keeping count by drawing marks. Every fifth mark is drawn across the previous 4 marks.
Created by: mrhunt