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Chapter 6
Collect and Organize Data
vocabulary | definition |
---|---|
Data | Information collected about people or things |
Tally | A mark used to show how often something happens |
Pictograph | A graph that uses pictures to show data |
Survey | Gather information |
Frequency | The number of times a response occurs |
Mean | The average of the set of numbers, found by dividing the sum of the set by the number of addends |
Median | The middle number in an ordered set of numbers |
Mode | The number or item in the set of data that occurs most often |
Range | The difference between the least and the greatest values |
Outlier | The data value that stands out from the other data values in the set |
Line plot | A graph that shows the frequency of data along a number line |
Stem- and - leaf plot | A table that shows groups of data arranged by place value |
Interval | The distance between the numbers on a scale |
Scale | The series of numbers placed at fixed distances to label a graph |
Cumulative Frequency- | a running total of frequencies |
Stem | each tens digit in a stem-and-leaf plot |
Leaf | each ones digit in a stem-and-leaf plot |