Answer:
B) 11
Step-by-step explanation:
The interquartile range (IQR) is defined as IQR = Q3 - Q1 where Q3 represents the upper quartile and Q1 represents the lower quartile.
In a box-and-whisker plot, Q1 is the leftmost edge of the box, so Q1=38. Q3 is the rightmost edge of the box, so Q3=49
Therefore, the interquartile range is IQR = Q3 - Q1 = 49 - 38 = 11
