Evan collected data about the amount of time each student in his math class spends studying. If the range of these data is 2, what does this reveal about the data? Group of answer choices All the students in his math class spend exactly 2 hours studying. All the students in his math class spend an average of 2 hours studying. The smallest and largest data values are 2 units away from each other. The middle data value for time spent studying by all students in his class is 2 hours.