Lab 7

For the first map on Number of People in 2000, the map shows that there is large amount of people near the coastal lines than in the center of the United States. Also in Alaska, the number of people is not very large. However, the most amount of people in Alaska can be found in counties near the U.S. than the top part of the State. Overall,, the most amount of people can be found in major counties such as the Los Angeles County or those in New York.

The second map on the difference of number of people from 1990 to 2000 shows relations to those of the first map. For example, major counties still continue to have the largest populations. The changes indicate that overtime counties on the east and west coast continue to grow whereas those in the center states become lower and lower.

On "Percent Change, 1990 to 2000 Total Population," the map show the greatest amount of change in population in counties. It shows that southern mid-west states have the biggest change in population and once again the center U.S. have the lowest change. On the lower east side there also seems to be a larger change in population than those in the upper east side. Thus, the percent change illustrates some different results than those in the previous two maps.

Lastly, the map on population density in 2000, depicts that the greatest amount is on the east side states, and the lowest amount is in the counties that are located in states more in the western side. Particularly on the east side, counties located in the east side show the greatest amount in states such as New York. And on the west side Alaska counties show nearly no population density.

Overall, using ArcGIS for this lab really helped show changes in numbers. Being able to use different colors and ramping colors made it visually easier to see how data is portrayed and what the data is saying. Also going through the tutorial was not difficult, yet it mainly reminded me what to do. In conclusion ArcGIS is a great program that makes seeing data easy to see and comprehend through its division of polygon areas and color schemes it offers.