Normal law of errors, also known as the normal distribution or Gaussian distribution, refers to a statistical concept that is widely used in data analysis. Synonyms for the normal law of errors include the bell curve, the Gaussian law, and the normal probability distribution. This distribution is characterized by a symmetrical graph that has a bell shape, with the majority of observations falling in the center of the distribution and fewer observations at the tails. The use of this distribution is prevalent in many fields, including finance, economics, and sciences, where it is used to represent average or typical values and assess the probability of events occurring within a certain range.