| A | B |
| model | a pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept |
| mean | the sum of the items in a data set divided by the number of items in the set: also called average |
| simulation | a method that is used to study and analyze the characteristics of an actual or theoretical system |
| measurement | a quantitative description of something that includes a number and a unit , such as 42 meters: also the process of obtaining a quantitative description of something |
| quantitative | relating to information that is expressed by a number or quantity |
| qualitative | relating to information that concerns quality or kind |
| scientific notation | a method of expressing a quantity of a number multiplied by 10 to the appropriate power |
| accuracy | a description of how close a measurement is to the true value of the quqntity measured |
| precision | the exactness of a measurement |