The frequency distribution of breeding activity in birds is described by a nonlinear curve (a normal distribution is nonlinear).
The idea is but the shadow of the theories of normal distribution mentioned in preceding chapters.
Such boon-work was considered as a kind of surplus demand; it exceeded the normal distribution of work.
(Or "Gaussian distribution") The frequency distribution of many natural phenomena such as the height or intelligence of people of a certain age and sex. The formula looks something like:
P(x) = e^(((x-m)/s)^2)
where P(x) is the probability of a measurement x, m is the mean value of x and s is the standard deviation.
Also known as a "bell curve" because of its shape.