Population Statistics Choropleth Map
Directions
You must use math to find the ranges of statistics to map. This will become your key. In other words, when you finish the math you will have 5-8 ranges of numbers that you will use to color your map.
1. Choose a population statistic from the PRB chart ______
2. Find the highest number for that statistic
3. Find the lowest number for that statistic
4. Subtract the lowest from the highest to get the difference
5. How many colors do you want to use (between 5-8)
6. Divide the difference by the number of colors
(this is a super special number )
7. It is time to fill in the key! Start with the lowest number, add the special number to it. This results in the first range.
8. Now, listen to ME! Add the special number to the higher number in the first range. Keep adding the special number to the higher number of the range.
9. Go back and fill in the lower number of each range. Do this by making it slightly higher than the range before it.
Example with numbers!
1. Choose a population statistic from the PRB chart ______
2. Find the highest number for that statistic
3. Find the lowest number for that statistic
4. Subtract the lowest from the highest to get the difference
5. How many colors do you want to use (between 5-8)
6. Divide the difference by the number of colors
(this is a super special number )
7. It is time to fill in the key! Start with the lowest number, add the special number to it. This results in the first range.
8. Now, listen to ME! Add the special number to the higher number in the first range. Keep adding the special number to the higher number of the range.
9. Go back and fill in the lower number of each range. Do this by making it slightly higher than the range before it.
KEY
10 – 13
13.1 – 16
16.1 – 19
19.1 – 22
22.1 - 25