“…His procedure based on cluster analysis yielded a set of five strategic groups of third sector organizations in the area of science, culture and education, namely: 'Foundations', 'National Associations', 'Friends of Societies', 'County Associations' and 'Provincial Associations'. Domański (2010) confirmed correlation between group membership and performance measured by revenue. There are little more studies conducted in the public sector in such number research for hospitals (Nath & Gruca, 1997) and for higher education institutions (Adam, 2016;Martinez & Wolverton, 2009;Warning, 2004Warning, , 2007Wójcik-Augustyniak, 2011).…”