Data Displays and Number Systems
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| Data | Information that is gathered by counting, measuring, questioning, or observing.
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| Statistics | The study of numerical data: collecting, organizing, and analyzing data to interpret it and answer questions.
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| Variability | How spread out the values in a set of data are.
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| Statistical Question | A question that would be answered by collecting or analyzing data.
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| Range | The difference between the maximum and the minimum in a data set. It is a measure of how spread out a distribution is.
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| Dot Plot | A sketch of data in which check marks, X's, or other marks above a labeled line show the frequency of each value.
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| Maximum | The largest amount or the greatest number in a set of data.
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| Distribution | The arrangement and frequency of data values in a data set. A distribution may be summarized with measures of center and variability.
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| Mode | The value or values that occur most often in a data set.
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| Data Landmark | A notable feature of a data set. Some landmarks are the mean, median, mode, and range.
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| Minimum | The smallest amount or the smallest number in a set of data.
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| Average | A typical value for a set of numbers. The word average usually refers to the mean of a set of numbers.
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| Mean | A typical value for a set of numerical data, often called the average. The mean if found by dividing the sum of the numbers by the number of numbers in the data set.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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