The **stem-and-leaf plot** is considered as one of the seven important tools of
**Statistical Process Control** (**SPC**), refer to *Montgomery* (2005). It is a bit similar in nature to the histogram plot.

The stem-and-leaf plot is an effective method of displaying data in a (partial) tree form. Here, each datum is split into two parts: the stem part and the leaf part. In general, the last digit of a datum forms the leaf part; the rest form the stem. Now, consider a datum *235*. If the split criteria is the units place, the stem and leaf parts here will be respectively *23* and *5*; if it is tens, then *2* and *3*; and finally if it is hundreds, it will be *0* and *2*. The left-hand side of the split datum is called as the **leading digits** and the right-hand ...

Start Free Trial

No credit card required