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G6: Unit 5
Data & Statistics
| Term | Definition |
|---|---|
| absolute value | How far a number is from zero. |
| attribute | A property of an object or person. Something you can say it has (such as size or color). |
| box plot (box and whisker) | A diagram that shows the five number summary of a distribution (lowest value, lower quartile, median, upper quartile, and highest value). |
| cluster | When data seems to be "gathered" around a particular value. |
| data | a collection of facts, measurement, or value |
| distribution | The arrangement of data values showing their frequency of occurrence. |
| dot plot (line plot) | A graphical display of data using dots on a number line. |
| frequency | How many pieces of data that are in each interva |
| histogram | A graphical display of data. The data is grouped into ranges and then plotted as bars. |
| interquartile range | The difference between the upper and lower quartiles in a data set |
| MAD : mean absolute deviation | the absolute difference between an element of a data set and a given point. |
| mean (average) | The average number in a set of data. Calculate by adding up the numbers, then dividing by how many numbers there are.measures of center |
| measures of center | Numbers that are used to describe the center of a set of data; these measures include the mean, median, and mode |
| median | The middle number of a set of data when the numbers are arranged from least to greatest, or the mean of two middle numbers when the set of data has two middle numbers. |
| mode | The number which appears most often in a set of data. |
| outlier | A value much greater or much less than the others in the data set |
| pattern | Things that are arranged following a rule or rules |
| plot | To draw on a graph or map. |
| Quantitative | Data that can be counted or measured. |
| Quartile 1 | The middle value of the data that's less than the median. Also known as the Lower Quartile. |
| Quartile 2 | The median |
| Quartile 3 | The middle value of the data that's greater than the median. Also known as the Upper Quartile. |
| Quartiles | Values that divide a data set into 4 equal parts; each part represents 25% of the data |
| range | The difference between the highest and lowest values in a set of data. |
| spread | describes the variability of a data set, that is, how the data is spread out and varies from the mean. (includes the range) |
| statistics | the study of collecting, analyzing, and presenting data. |
| symmetric distribution | Data that are evenly distributed; the values above and below the median are very similar. |
| Variability | How data points differ from each other. Range and Mean are common ways to measure variability of data. |
Created by:
Mr. Shaun
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