This example uses the flight delay data of the preceding example to illustrate how you can create box charts with various styles of box-and-whisker plots. For simplicity, the control limits are ...

The Gaussian form chosen for the variogram in the "Getting Started" section is based on the consideration of the plots of the sample variogram. For the coal thickness data, the Gaussian form appears ...

When data is presented as a list of numbers, it can be difficult to interpret. If it is summarised in a diagram it is easier to draw conclusions and to compare with a different data set. A box plot is ...

Quartiles are the values that divide a data set into quarters: Put the values in order Divide the list into four equal parts The Quartiles are at the divisions The interquartile range shows the range ...

Examined here were the accuracy and bias of estimates of whisker length based on box, line, and midgap plots. For each type of graph, a different sample of undergraduates viewed 48 single-plot graphs.