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Quality assurance. Quality assurance ( QA) is the term used in both manufacturing and service industries to describe the systematic efforts taken to assure that the product (s) delivered to customer (s) meet with the contractual and other agreed upon performance, design, reliability, and maintainability expectations of that customer.
A complaint system (also known as a conflict management system, internal conflict management system, integrated conflict management system, [1] or dispute resolution system) is a set of procedures used in organizations to address complaints and resolve disputes. Complaint systems in the US have undergone significant innovation especially since ...
A visual representation of the sampling process. In statistics, quality assurance, and survey methodology, sampling is the selection of a subset or a statistical sample (termed sample for short) of individuals from within a statistical population to estimate characteristics of the whole population. The subset is meant to reflect the whole ...
The chief complaint, formally known as CC in the medical field, or termed presenting complaint ( PC) in Europe and Canada, forms the second step of medical history taking. It is sometimes also referred to as reason for encounter ( RFE ), presenting problem, problem on admission or reason for presenting. [citation needed][ 1] The chief complaint ...
Given an r-sample statistic, one can create an n-sample statistic by something similar to bootstrapping (taking the average of the statistic over all subsamples of size r). This procedure is known to have certain good properties and the result is a U-statistic. The sample mean and sample variance are of this form, for r = 1 and r = 2.
In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable.The general form of its probability density function is = The parameter is the mean or expectation of the distribution (and also its median and mode), while the parameter is the variance.
The first step in control self-assessment is to document the organisation's control processes with the aim of identifying suitable ways of measuring or testing each control. The actual testing of the controls is performed by staff whose day-to-day role is within the area of the organisation that is being examined as they have the greatest ...
Operational acceptance testing (OAT) is used to conduct operational readiness (pre-release) of a product, service or system as part of a quality management system. OAT is a common type of non-functional software testing, used mainly in software development and software maintenance projects. This type of testing focuses on the operational ...