| A | B |
|---|
| survey | a set of questions that is used to gather information about a group or to find the preference of a group |
| sample | a part of the group that is chosen to represent the whole group or population |
| population | the entire group being surveyed |
| random sample | a sample for which every person in the population has an equal chance of being chosen |
| cumulative frequency | a running total of frequencies |
| pictograph | a graph that uses sumbols or pictures and a key to display countable data |
| bar graph | a graph that displays countable data with vertical or horizontal bars; compares facts about groups of data |
| line graph | a graph that shows how data change over time |
| circle graph | a graph that show how parts of the data are related to the whole and to each other |
| trend | a pattern over time, such as increasing, decreasing, or staying the same, that is shown by data in part or all of the graph |
| scale | set of numbers placed between one number and the next on the scale |
| interval | the difference between one number and the next on the scale |
| ordered pair | a pair of numbers used to locate a point in a coordinate system |
| frequency table | a table that uses numbers to record data about how often something happens |
| line plot | a graph that shows frequency of data along a number line |
