When analysing normally distributed data, standard deviation can be used in conjunction with the mean in order to calculate data intervals. If = mean, S = standard deviation and x = a value in the data set, then. 1  about 68% of the data lie in the interval: . 2  about 95% of the data lie in the interval: + 2S.
Little gem arborvitae (Thuja occidentals 'Little Gem') is an evergreen shrub that keeps its brilliant color and foliage all year long. Growing 1 to 3 feet tall, little gem has medium texture and a slow growth rate. The dense dwarf shrub has a compact form and globose shape.
plant quick find clear. Arborvitae. Arborvitae will flourish where no other evergreen does, spreading a lush screen of fan-like foliage that provides privacy and gives winter shelter to the birds. For garden sculptors, arborvitae offers just the right texture and growth habit for topiaries. Many dwarf varieties are available as fillers and vertical accents for smaller gardens.