Das, Kinkar Ch.Maden, A. DilekCangul, I. NaciCevik, A. Sinan2020-03-262020-03-2620170369-82032250-1762https://dx.doi.org/10.1007/s40010-016-0315-8https://hdl.handle.net/20.500.12395/35336The eccentricity of a vertex is the maximum distance from it to any other vertex and the average eccentricity avec(G) of a graph G is the mean value of eccentricities of all vertices of G. In this paper we present some lower and upper bounds for the average eccentricity of a connected (molecular) graph in terms of its structural parameters such as number of vertices, diameter, clique number, independence number and the first Zagreb index. Also, we obtain a relation between average eccentricity and first Zagreb index. Moreover, we compare average eccentricity with graph energy, ABC index and index.en10.1007/s40010-016-0315-8info:eu-repo/semantics/closedAccessGraphDistancesAverage eccentricityEccentricityClique numberIndependence numberFirst Zagreb indexEnergyGeometric-arithmetic index (GA1)Atom-bond connectivity index ( ABC)Article8712330Q4WOS:000394364400004Q3