Because the import of basic materials is an indication of the strength of the U.S. economy, the Commerce Department monitors the importation of steel. The following data are the level of steel imports (in millions of tons) for the years 1985 to 1996:
Year | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 |
Import | 27.6 | 22.7 | 21.9 | 20.4 | 19.7 | 21.9 | 20.2 | 21.9 | 21.8 | 32.7 | 27.3 | 32.1 |
a. Would a pie chart be an appropriate graphical method for describing the data?
b. Construct a bar graph for the data.
c. Do you observe any trends in steel imports?
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