Use the image to answer the question.
A vertical number line labeled the Number of Laps Run ranges from 6 to 62 in increments of 2, with numbers marked in increments of 4. A box plot to the right of the number line shows the following: the minimum value is 6; the maximum value is 62; the lower quartile is 13; the median value is 28, and the upper quartile is 43.5.
The box plot represents the number of laps a group of 6th graders were able to run. Approximately what percentage of 6th graders ran fewer than 13 laps?
1. 12.5%
2. 75%
3. 50%
4. 25%
3. 50%
Since the lower quartile is 13, this means that 25% of the data falls below 13. However, because the data is symmetrically distributed, the lower quartile also represents the median of the data below it. Therefore, approximately 50% of 6th graders ran fewer than 13 laps.