Abstract
The concept of statistical summability (C, 1) has recently been introduced by Moricz [Jour. Math. Anal. Appl. 275, 277-287 (2002)]. In this paper, we use this notion of summability to prove the Korovkin type approximation theorem by using the test functions 1, e(-x), e(-2x). We also give here the rate of statistical summability (C, 1) and apply the classical Baskakov operator to construct an example in support of our main result.