### Ranged Option view

A Ranged map breaks data into ranges, assigns a specific color to each range, and then codes geographic areas on the map by color in order to display the range. You can use a ranged map to display sales figures in a range of equal intervals. You can then use shades of color to code sales regions according to those figures. This type of map is useful for determining the regions of highest sales simply by looking at the colors it displays.

##### Number of intervals

Use this box to enter the number of intervals you want to use as a range. Your map and its legend change accordingly. You can enter a number between 1 and 16. The default is 5.

##### Distribution method

Use this list to assign range intervals in such a way that the values fit one of the available criteria:

- Equal count
  Assigns intervals so that the same number of regions (or as close to the same number of regions as possible) appear in each interval.
- Equal ranges
  Assigns intervals so that the summary values in each interval are numerically equal.
- Natural break
  Assigns intervals using an algorithm that attempts to minimize the difference between the summary values and the average of the summary values for each interval.
- Standard deviation
  Assigns intervals so that the middle interval breaks at the mean (or average) of the data values, and the intervals above and below the middle range are one standard deviation above or below the mean. Standard deviation is the square root of the variance. This option projects how various values in a set of values deviate from the mean for that set.

##### Color of highest interval

Use this list to select the color you'd like to use for the highest (largest) interval in your range. This color becomes the top end of your color range.

##### Color of lowest interval

Use this list to select the color you'd like to use for the lowest (smallest) interval in your range. This color becomes the bottom end of your color range.

##### Allow empty intervals

Select this check box if you want to see empty intervals on your ranged map. This option is selected by default.

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