| A | B |
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| Bar Graphs | This type of graph displays a categorical variable whose order is arbitrary. |
| Bar Graphs | A diagram showing a system of connections or interrelations between two or more things by using bars. This graphs primary function is to compare categories. |
| Cluster sampling | Members of the population are randomly selected from particular parts of the population and surveyed in groups. |
| Clusters | Isolated groups of values in a set of data. |
| Convenience sampling | Members of a population are selected because they are readily available. |
| Data | “Factual information used as a basis for reasoning, discussion or calculation. |
| Dependent Variables | The elements of the range; also called the output values of a function. |
| Frequency Table | A method of recording data that shows how often an item appears in a set of data. |
| Gaps | Large spaces between values in a set of data. |
| Graphs | In general, these provide visual representations of the distribution of the data and display characteristics about the data that are sometimes difficult to identify from the charts and tables. |
| Histogram | This type of graph displays a continuous variable which is separated into continuous intervals. |
| Histogram | This diagram uses bars to show frequencies within a population. |
| Independent Variables | The elements of the domain; also called the input values of a function. |
| Interval | All values between two chosen numbers. |
| Mean | The arithmetic average of a set of data. |
| Mean | This the most representative measure of central tendency for data sets that do not contain extreme values. |
| Measures of Central Tendency | Statistics or measurements used to describe a set of data. Examples of these are mean, median and mode. |
| Median | The middle value of the data when arranged in numerical order. |
| Median | This is the most representative measure of central tendency for data sets that contain extreme values. |
| Mode | The number (or numbers) that occurs most often in the set of data. |
| Mode | This is used to describe the most characteristic value of a set of data. |
| Outliers | Data items that are much greater or much less than most of the other values in a set of data. |
| Population | The group from which data is collected. |
| Random sampling | Each member of the population has an equal chance of being selected. |
| Range | The difference between the greatest and least values in a set of data. |
| Sample | A representative part of a population. |
| Statistics | “A branch of mathematics that involves the study of data, specifically the methods used to collect, organize and interpret data. |
| Stem-and-leaf plot | A method of displaying data in which certain digits are used as stems and the remaining digits are used as leaves. |
| Systematic sampling | Members of a population that has been ordered in some way are selected according to a pattern. |
