22;
When dealing with a box plot, the box represents the interquartile range (the range of the middle 50% of the data);
The value of the left side of the box is the lower quartile (Q₁);
The value of the right side of the box is the upper quartile (Q₃);
The value of the line in the middle of the box is the median (Q₂);
The lower quartile is the value below which 25% of data lies;
The median is the value below which 50% of data lies;
The upper quartile is the value below which 75% of data lies;
Therefore, the number being asked of you is, in fact, the upper quartile value, which is 22.
