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Definition
| in terms of statistics, size, and forms. |
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Term
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Definition
| measure for symplifying large data sets to assist in analysis and display |
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Term
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Definition
| number of classes and data classification schemes to be used in data generalization. |
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Term
| Nine Classification Schemes |
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Definition
1. Natural Breaks
2. Optimization
3. Nested Means
4. Mean and Standard Deviation
5. Equal Interval
6. Equal Frequency
7. Arithmetic
8. Geometric
9. User defined. |
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Term
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Definition
| the number of one item compared to the number of another item. |
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Term
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Definition
| the ratio of the number of items in one group(class) to the total of all items |
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Definition
| an associated amount based on a fraction of 100: also a proportion multiplied by 100 |
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Definition
| a ratio of the number of items to a standardized value, for example, general fertility rate |
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Definition
| sort, rank order, range, mean, median, standard deviation, normal distribution |
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Definition
| reordering of the data into numberical sequence |
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Term
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Definition
| the sequencing of numbers arranged from high to low |
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Definition
| the difference between the largest and smallest data values in a data set |
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Definition
| the average of a class or data set determined by the summation of the data values divided by the number of observations |
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Definition
| the middle value in a rank-ordered set of numbers |
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Definition
| the most often occuring number or value in a data set |
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Definition
| a measure of dispersion of observations about the mean |
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Term
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Definition
| usually associated with larger data sets, the data are distributed symmetrically about the mean2 |
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Term
| Three Steps in Data classification |
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Definition
1. Selection of the number of classes
2. Classification procedure utilized
3. Analysis of Classification Accuracy
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Term
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Definition
| division of a data set into classes based on breaks visible on a dispersion graph or histogram |
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Definition
| a more sophisticated method of pursuing natural breaks from a quantitative, algorithmic standpoint. |
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Term
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Definition
| a classification which uses the mean of the data set to identify two classes |
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Term
| Mean and Standard Deviation |
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Definition
| class ranges are determined for a normally distributed data set using the mean and stadard deviation steps above and below the mean. |
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Term
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Definition
| classification scheme where the range of each class is the same |
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Term
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Definition
| classification scheme where each class has the same number of observations |
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Definition
| schemes that are useful when classifying data with significant ranges |
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Definition
| useful for the dramatic ranges in population |
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Term
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Definition
| arbitrary determination of clas breaks specified by cartographer |
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Term
| Maps gain their value in 3 ways |
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Definition
1. A way of recording and storing information
2. a means for analyzing locational distributions and spatial patterns.
3. A method of producing information and communicating findings |
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