| A | B |
|---|
| Bar Graph | the lengths of the bars are used to represent and compare data. |
| Mean | sum of values divided by the number of values |
| Median | middle value |
| mode | value that occurs most often |
| Range | the difference between the greatest value and the least value |
| Line Graph | points that represent data pairs are connected using line segments |
| Population | entire group of object that you want information about. |
| random sample | each object has an equally likely chance of being selected |
| biased sample | sample that is not representative of the population |
| stem-and-leaf plot | data display to show data in increasing order |
| box-and-whisker plot | data display that divides data values into 4 parts. |
| lower quartile | lower half of the median |
| upper quartile | upper half of the median |
| lower extreme | least data value |
| upper extreme | greatest data value |
| frequency table | table used to group data values in intervals |
| frequency | number of value that lie in the interval |
| histogram | graph that displays data for a frequency table |
