| Term | Definition |
| stem-and-leaf plot | a way of displaying numerical data in a graph form |
| line plot | a way of organizing the frequency of data along a number line |
| median | the physical center of a set of data |
| mode | the value that occurs MOST OFTEN in a data set |
| range | the difference between the highest and lowest data values in a set |
| frequency | the number of times a value occurs in a set of data |
| x-axis | the horizontal axis |
| y-axis | the vertical axis |
| outlier | in a set of data, it is a number that is much lower or higher than all the other numbers |
| mean | an average; add up all the data points and divide by the number of data points in the set |