Thus, our motivation is to propose an adaptive EWMA-type control chart for which the design parameters can be found more easily so that its application can be facilitated in practice. As op- posed to the scheme proposed by Capizzi and Masarotto (2003) , where three design parameters are to be determined, we propose an adaptive EWMA-type chart, in which the smoothing constant is chosen adaptively based on the data and is the only parameter to be estimated. Further, no assumption needs to be made on the size of a shift, whether it is “small”or “large”, in the process mean, making it more realistic in terms of application. This is described in the next section.