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 |