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.
Juniper shrubs are evergreen and are usually low spreading bush type plants. There are approximately 50 species of junipers and they are found in most countries in the northern hemisphere.unipers are used for groundcovers and border plantings. They are especially helpful in preventing soil erosion, weed control, and planting on difficult to access parts of a landscape. Juniper shrubs are drought tolerant and perform quite well in rock gardens.