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A bar graph shows the horizontal axis labeled Number of Students and the vertical axis labeled State. The horizontal axis is labeled, from left to right: 0, 4, 8, 12, 16, 20, 24, 28 và 32. The vertical axis is labeled from the bottom of the axis to the top of the axis as follows: New Mexico, Arizona, Utah, Colorado và Oregon. The bar line for each type of state shows the following: New Mexico bar line extends to 12, Arizona bar line extends to 24, Utah bar line extends to the middle of 16 and 20, Colorado bar line extends to the middle of 24 and 28 và Oregon bar line is labeled with a question mark.