Multiple choice six-sigma green-belt

Extreme values displayed in Box Plot are called as _________

  1. Highest Value

  2. Outliers

  3. Third Quartile

  4. First Point
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a box plot (box-and-whisker plot), extreme values that fall beyond the whiskers are called outliers. The whiskers typically extend to 1.5 × IQR (Interquartile Range) from the quartiles. Any data point beyond these whiskers is considered an outlier and is plotted individually as a dot or asterisk. These extreme values warrant investigation as they may represent special causes or measurement errors.

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