The lower the pH reading, the more acidic the solution. Readings from 0â7 are considered acidic, and numbers from 7.0â14 are considered basic, or alkaline. Pure water, in the very middle of the (logarithmic) pH scale, has a pH of 7.0, which is considered neutral.
Bell curve may refer to: 1  A Gaussian function, a specific kind of function whose graph is a bell-shaped curve. 2  Normal (Gaussian) distribution, whose density function is a Gaussian function.ell curve may refer to: 1  A Gaussian function, a specific kind of function whose graph is a bell-shaped curve. 2  Normal (Gaussian) distribution, whose density function is a Gaussian function.
DEFINITION of 'Bell Curve'. The most common type of distribution for a variable. The term bell curve comes from the fact that the graph used to depict a normal distribution consists of a bell-shaped line.The bell curve is also known as a normal distribution.The bell curve is less commonly referred to as a Gaussian distribution, after German mathematician and physicist Karl Gauss, who popularized the model in the scientific community by using it to analyze astronomical data.EFINITION of 'Bell Curve'. The most common type of distribution for a variable. The term bell curve comes from the fact that the graph used to depict a normal distribution consists of a bell-shaped line.