Crown gall causes stunting of growth. Both loss of yield and stunting of growth may occur when seedlings or young cuttings are infected in the early stages of plant growth. The lack of vigor, reduction in foliage, and water stress are associated with chronically diseased root systems.
1. In probability theory, a probability density function (pdf), or density of a continuous random variable, is a function that describes the relative likelihood for this random variable to take on a given value.
The normal distribution density function f (z) is called the Bell Curve because it has the shape that resembles a bell. Standard normal distribution table is used to find the area under the f (z) function in order to find the probability of a specified range of distribution.