| A | B |
|---|
| vertical axis | up and down |
| horizontal axis | across |
| circle graph | circle divided into wedge-shaped sectors that show how portions of a set of data compare with the whole set |
| scale | the "ruler" on the axis of a graph |
| interval | the amount of space between the values on the scale |
| line plot | a number line that shows how many times each data value occurs |
| outliers | values that are separated from the rest |
| mean | the average of a set of data, found by dividing the sum of the data values by the number of data values |
| median | the middle data value when the values are arranged in order, if there is no single middle value, the median is the mean of the two middle values |
| mode | the most common data value, can be done or two or more |
| range | the difference between the highest and lowest data values |
| line graph | used to show changes in data over time |
| trend | a clear direction in a graph that suggests how the data will behave in the future |
| scatterplot | used to show relationship between two sets of data, each with its own axis; each pair of values is represented by a point |
| positive relationship | when two sets of data increase at the same time, slants upward to the right |
| negative relationship | when one set of data increases as the other decreases, slants downward to the right |
| no relationship | when two sets of data neither increase nor decrease together |
