We can calculate the gradient of a tangent to a curve by differentiating. In order to find the equation of a tangent, we: Differentiate the equation of the curve Substitute the \(x\) value into the ...

De Moivre's original derivation of the normal curve in a 7 page Note in Latin and its English translations in the 1738 and 1756 editions of his The Doctrine of Chances are described. Karl Pearson's ...

Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, and has a degree in accounting and finance from DePaul University. Vikki Velasquez is a researcher and writer who has ...

THIS little volume is a kind of “Molesworth” for the statistical biologist. Some two-thirds of the book are taken up with numerical tables (ordinates of normal curve, probability integral, gamma ...