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Two-variable data: Models and scatterplots SAT question

Math · Problem-Solving and Data Analysis · Easy · Answer it here, explanation included.

The figure presents a line graph. The horizontal axis is labeled “Graduating class year,” and the years 2000 through 2008, in increments of 2 years, are indicated. The vertical axis is labeled “Number of graduates who enrolled in college,” and the numbers 0 through 300, in increments of 50, are indicated. There are 7 data points indicated on the graph. The 7 data points represent the number of graduates from each of the classes from 2001 through 2007. The data represented by the 7 data points are as follows. Note that all numbers of graduates are approximate.

Year, 2001. Number of graduates, 225.
Year, 2002. Number of graduates, 220.
Year, 2003. Number of graduates, 240.
Year, 2004. Number of graduates, 260.
Year, 2005. Number of graduates, 280.
Year, 2006. Number of graduates, 255.
Year, 2007. Number of graduates, 275.

The line graph shows the number of graduates from the classes of 2001 through 2007 at a certain school who enrolled in college within 24 months of graduation. Of the following, which class had the fewest graduates who enrolled in college within 24 months of graduation?

ExplanationShow

Choice A is correct. The year with the fewest graduates who enrolled in college within 24 months of graduation is the point with the lowest value on the vertical axis. This occurs at 2002.

Choice B, C, and D are incorrect. The years 2004, 2005, and 2007 each had a greater number of graduates who enrolled in college within 24 months of graduation than did the year 2002.

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Two-variable data: Models and scatterplots SAT question

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