chi2

In probability theory and statistics, the chi-squared distribution (also chi-square or χ2-distribution) with k degrees of freedom is the distribution of a sum of the squares of k independent standard normal random variables. (Source: wikipedia.org)

logo_consulting

Consulting, in particular management consulting, is the practice of helping organizations to improve their performance. Organizations may draw upon the services of management consultants for a number of reasons, including gaining external (and presumably objective) advice and access to consultants' specialized expertise. (Source: wikipedia.org)