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Probability
Experimental Probability
| Term | Definition |
|---|---|
| Certain | Will always happen. |
| Compound Events | An event made up of two or more simple events. |
| Dependent Event | An event which does affect the outcome of another event. |
| Equally likely outcome | Outcomes for an event that have the same chance of occurring. |
| Even Chance | Equal chance of occurring or not occurring. |
| Event | One outcome or a collection of outcomes in the sample space of an experiment. |
| Experiment | An activity or process where the result is unknown. |
| Impossible | Will never happen. |
| Independent Event | An event which does not affect the outcome of another event. |
| Outcome | A result of an experiment. |
| Probability | The calculated chance of something happening. |
| Random | To choose so that the outcome is likely to happen. |
| Relative frequency | The frequency of an event divided by the total number of frequencies. |
| Sample Space | The list of possible outcomes. |
| Theoretical Probability | The probability of an event that is determined by considering the possible outcomes. |
| Tree Diagram | A diagram that uses branches to illustrate all possible outcomes of an experiment. |
| Two Way Table | A table that presents data in rows and columns. |
| Venn Diagram | A diagram for representing sets. |
| Very Likely | Will usually happen. |
| Very Unlikely | Usually won't happen. |
| theoretical probability | ratio of the number of ways in which an event can occur to the total number of equally likely outcomes |
| experimental probability | ratio of the number of times the event occurs to the number of trials |
| You flip a coin 100 times and it lands on heads 53 times. Probability for flipping heads. | 53/100 |
| You flip a coin 100 times and it lands on heads 53 times. Probability for NOT flipping heads. | 47/100 |
| You flip a coin 100 times and it lands on heads 53 times. Probability for flipping tails. | 47/100 |
| You flip a coin 100 times and it lands on heads 53 times. Probability for NOT flipping tails. | 53/100 |
| You have a group of 2 baseballs and 6 footballs. Probability for selecting a football. | 3/4 |
| You have a group of 2 baseballs and 6 footballs. Probability for selecting a baseball. | 1/4 |