Box whisker plots are particularly useful for illustrating  change variations between different data sets.

Box-whisker plots are a great way to show how stable the different thermocouple attachment methods are relative to each other.

The top dot is the Maximum value and the bottom dot is the Minimum value from the data set. The top of the box is the 75th Percentile (AKA: 3rd Quartile) and the bottom of the box is the 25th Percentile (AKA: 1st Quartile). This makes the Median, the red dot, the 50th Percentile (AKA: 2nd Quartile). Percentile is a number describing the data set such that the K-th Percentile is a number such that K % of all data values are less and (100 – K) % are larger than it, or to be more precise, at least K% of the sorted values are less than or equal to it and at least (100 – K) % of the values are greater than or equal to it.