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.
Type: Dicot, shrub, evergreenShape: Upright, spreading, open form, height & width to 5', fast grower. Environment: full sun to part shade, tolerates any soil, tender, frost will kill exposed foliage. Leaves: Pinnate, opposite, elliptic ovate 1-2 long and a bit shiny.