Below you again load the obama_vs_mccain dataset:

 

                  State Region Obama McCain Turnout Unemployment Income Population ...
1               Alabama     IV 38.74  60.32    61.6          5.9  22732    4802982
2                Alaska      X 37.89  59.42    68.0          6.6  29382     721523
3               Arizona     IX 44.91  53.39    55.7          7.1  25203    6412700
4              Arkansas     VI 38.86  58.72    53.1          5.8  20977    2926229
5            California     IX 60.94  36.91    62.0          8.2  29020   37341989
6              Colorado   VIII 53.66  44.71    70.8          5.4  29679    5044930
7           Connecticut      I 60.59  38.22      NA          6.2  36468    3581628
8  District of Columbia    III 92.46   6.53    62.0          7.4  40846     601723
9              Delaware    III 61.91  36.93    66.7          5.9  28935     900877
10              Florida     IV 50.91  48.10    67.4          7.3  26503   18900773
...

 

Draw a scatterplot of the percentage of unemployed people in each state (on the horizontal axis) and the percentage of people who voted for Obama (on the vertical axis):

 

• Using a base function (no need to store the graph in an object)
• Using ggplot2 (store the graph in an object called UO)

 

(from: Cotton, 2013, Learning R, O’Reilly)