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22 Cards in this Set
- Front
- Back
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Quantitative Data |
Data that can be expressed with numerical measurements. |
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Categorical Data |
Can not be expressed using numbers |
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Frequency table |
Shows how often each item occurs in a set of categorical data. |
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Two way frequency Table |
A table with two categorical variables |
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Relative frequency |
The frequency of the category divided by the total of all frequencies |
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Joint relative |
Found by dividing a frequency that is not in the total row or the total column by the grand total |
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Marginal relative |
Found by dividing a row total or a column total by the grand total |
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Conditional relative |
Describes what portion of a group with a given characteristic also has another characteristic |
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Mean |
The sum of the values in the set divided by the number of values in the set |
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Median |
The middle value in a set when the values are arranged in numerical order |
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Range |
The difference between the greatest and the least data values |
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Quartiles |
Values that divide a data set into four equal parts |
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First quartile |
The median of the lower half of the set |
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Second quartile |
Median of the whole set |
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Third quartile |
The median of the upper half of the set |
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Interquartile range |
The difference between the third and first quartiles |
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Standard deviation |
Represents the average of the distance between individual data values and mean |
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Dot Plot |
Data representation that uses a number line and X's dots or other symbols to show frequency |
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Outlier |
A value in a data set that is much greater or much less than most of the other values in the data set |
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Statistics |
Numbers that characterize a dataset such as measures of center and spread |
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Histogram |
A bar graph that is used to display the frequency of data divided into equal intervals |
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Normal distribution |
A bell-shaped symmetric distribution with a tail on each end |
