A box and whisker plot is a graphical method of displaying variation in a set of data. In most cases a histogram provides a sufficient display; however, a box and whisker plot can provide additional detail while allowing multiple sets of data to be displayed in the same graph. Some types are called box and whisker plots with outliers.
Can you compost Leylandii branches and hedge clippings - Yes. We were quite surprised to learn some experienced composters advise not to add Leyandii cuttings as they are apparently too acidic. Composting bacteria can remain active in all but the most acidic conditions.
Composting is a process of breaking down organic matter and turning into a nutrient-rich soil additive. It is recycling at its very best. If you have tree trimmings you need to recycle, you have a couple of different options. Many communities now offer curbside yard waste or green waste recycling.