Multiple choice six-sigma green-belt Center line on a box plot indicates Mean Median Mode Average of Mean, Median and Mode Reveal answer Fill a bubble to check yourself B Correct answer Explanation The center line (and the line inside the box) of a box plot represents the median of the dataset. The box itself shows the interquartile range (IQR) from Q1 to Q3. The mean is not typically shown on a standard box plot unless specifically marked.