The number of shares traded on the New York Stock Exchange experienced dramatic change in the 1990s as more and more individual investors gained access to the stock market via the Internet and online brokerage houses. The volume is shown in the table for 2002, and the odd numbered years from 1991 to 2001 (in billions of shares). (a) Draw a scatterplot of the data, (b) decide if the association is linear or nonlinear, and (c) if the association is positive, negative, or cannot be determined.
Source: 2000 and 2004 Statistical Abstract of the United States, Table 1202
x | y |
1991 | 46 |
1993 | 67 |
1995 | 88 |
1997 | 134 |
1999 | 206 |
2001 | 311 |
2002 | 369 |
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