Box plots are visual illustrations of this information.
A box plot provides a visual approximation of the distribution of a data set since each segment of the chart contains one quarter, or of the data. Note that the center of the data lies inside the box. The further apart the segments are, the greater the spread is for that quarter of the data.
Thanks a Latte Café measured the temperature of 800 cappuccinos. The box plot below shows the results in F.
A good cappuccino, according to the experts, has a temperature between F and F. Approximately how many of the cappuccinos could be considered "good"?
Each part of a box plot contains of the data. This means the box contains of the data.
The quartiles are marked as the sides of the box plot. Now the box plot is complete.