click below
click below
Normal Size Small Size show me how
Proportions Vocab
Vocabulary words from the proportions unit.
| Term | Definition |
|---|---|
| Ratio | A comparison of two numbers by division. |
| Rate | A ratio of two numbers with different units. |
| Unit Rate | A rate with a denominator of 1. |
| Proportion | An equation which states that two ratios are equal. |
| Cross Product | For a proportion ( a/b=c/d ), ad = cb is the cross product. |
| Similar Figures | Two figures that have the same shape but not necessarily the same size. |
| Scale Drawing | Enlarged or reduced drawing that is similar to an actual object or place. |
| Scale | Ratio of the distance in the drawing or model or the distance of the actual object. |
| Percentage of Change/Increase/Decrease | A ratio of the amount of change to the original amount expressed as a percent. This can be an increase or a decrease. |
| Greatest Possible Error | When taking measurements the greatest possible error is ½ the unit of measurement. |
| Percent Error | A ratio of the greatest possible error to the length of the measurement represented as a percent. |
| Probability | How likely it is that something will occur, written as P(x) where x is the event. |
| Outcome | Result of a single trial. |
| Event | A desired outcome or group of outcomes. |
| Sample Space | All the possible outcomes. |
| Theoretical Probability | Ratio of the number of favorable outcomes to the number of possible outcomes. |
| Compliment of an Event | All of the possible outcomes that are not part of the event. |
| Experimental Probability | Ratio of the number times your event occurs to the number of the time the experiment is done. |
| Independent Event | Events that do not influence one another. |
| Dependent Event | Events that influence each other. |