Mean time to failure (MTTF) is the length of time a device or other product is expected to last in operation. MTTF is one of many ways to evaluate the reliability of pieces of hardware or other technology.

The Open Source Definition. Introduction. Open source doesn't just mean access to the source code. The distribution terms of open-source software must comply with the following criteria: 1. Free Redistribution. The license shall not restrict any party from selling or giving away the software as a component of an aggregate software distribution containing programs from several different sources.

Mean-Variance Analysis: A mean-variance analysis is the process of weighing risk (variance) against expected return. By looking at the expected return and variance of an asset, investors attempt.

Sample Means The sample mean from a group of observations is an estimate of the population mean .Given a sample of size n, consider n independent random variables X 1, X 2, ., X n, each corresponding to one randomly selected observation.Each of these variables has the distribution of the population, with mean and standard deviation .The sample mean is defined to be.

Cryptography is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it.

Skewness is asymmetry in a statistical distribution, in which the curve appears distorted or skewed either to the left or to the right. Skewness can be quantified to define the extent to which a distribution differs from a normal distribution.

Entrepreneur definition is - one who organizes, manages, and assumes the risks of a business or enterprise. The Characteristics of an entrepreneur.