To determine which class shows the smallest spread in scores based on box plots, you need to look at the interquartile range (IQR) represented by the boxes in the plots. The class with the smallest IQR indicates that the scores are more tightly clustered around the median, signifying a smaller spread.
Without the visual box plots, I can't provide a definitive answer, but you should examine the IQR for each box plot:
- The class with the smallest box (the shortest height of the box) will have the smallest spread.
- If one class has a narrow range between the first (Q1) and third quartile (Q3) compared to the others, that class shows the smallest spread in scores.
Review the box plots, and based on your observation, select the appropriate class accordingly!