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MATH PROBABILITY G 5
MATH PROBABILITY GRADE 5 MR G 2057215 mles
| Term | Definition |
|---|---|
| sample space | all possible outcomes or results ex. tossing a coin: P(h) = 50% P(t) = 50% sample space = {head, tail} |
| outcome | the result of a single trial of an experiment |
| event | a group of outcomes - - roll an even number on a die (outcomes 2,4,6) |
| probability | a measurement of how likely an event is- the number of ways it can happen/total outcomes |
| complement | all outcomes in an event that did not occur |
| independent event | an event not affected by a previous event- flipping a coin |
| dependent events conditional probability | an event affected by a previous event - pulling different color socks from a drawer, the probability changes unless you return the one you pulled out |
| mutually exclusive | events that can not happen together - a coin flip can not result in heads and tails |
| experiment | has an unknown outcome |
| tree diagram | looks like a factor tree, used to calculate the probability of both independent and dependent events |
| tree diagram continued! | tree diagrams for dependent events are like a dichotomous key for classification |
| ratio | shows relative size of two numbers - can be part to whole (like a fraction) or part to part - can be written in various forms 1:3. 1/3, 1 to 3 |
| proportion | a statement that says two ratios (or fractions) are equal - 2:3 = 8:12 |
| Watch this card for a possible bonus point! | Watch this card for a possible bonus point! |
| research the answer | Combination |
| research the answer | Permutation |
| random | lack of pattern or predictability |
| prediction / forecast | expected outcome |
| odds | the ratio between the number of favorable outcomes to the number of unfavorable outcomes |
| likely, certain, unlikely, impossible | casual language indicating odds |
| sample (random) | A selection taken from a larger group so that you can examine it to find out something about the larger group- all items in the group have an equal chance of being selected |
| trend | a general tendency if there is a pattern |
| reliable | consistent results |
| "Nothing is certain except death and taxes." | Mark Twain |
Created by:
Mr Giss
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