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unit 1
Data Displays and Number systems
| Term | Definition |
|---|---|
| Data | Information that is gathered by counting, measuring, questioning or observing. |
| Statistics | The study of numerical data: collecting, organizing, and analyzing data to interpret it and answer questions |
| Variability | How spread out the values in a set of data are. |
| Statistical question | A question that would be answered by collecting or analyzing data. |
| Range | The difference between the maximum and the minimum in a data set .The range is a measure of how spread out a distribution is . |
| Dot Plot | a number line long enough to encompass all numbers in a sample, showing a dot over the position corresponding to each number. if more than one dot falls in the same position, they are stacked up. |
| Maximum | highest or greatest amount or value. |
| Distribution | the distribution of data typically takes into account the range and spread of a data set. It describes the shape of a data set when displayed on a histogram. |
| Mode | A type of average. In a set of scores, values or numbers the mode is the one that occurs the most. |
| Data Landmark | A notable feature of a data set.Some landmarks are the mean, median, mode, maximum, minimum, and range. |
| Minimum | lowest or least amount or value. |
| Medium | A type of average which is the middle value of an ordered set of data values. A line that joins the vertex of a triangle to the midpoint of the opposite side. |
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