Box And Whisker Plot

Graph used to summarize data. The range of measurement is on the y-axis. The top line of the box represents the 75th percentile (or the third quartile, Q3). The bottom line of the box represents the 25th percentile (or the first quartile, Q1). The horizontal line in the middle of the box represents the median score. A "whisker" extends from Q1 downward to the lowest data point (excluding outliers). A "whisker" extends upward from Q3 to the highest data point (excluding outliers).

Michelsonmorley-boxplot.svg

Box plots give a lot of information in one picture.