when the autocorrelation is negative for IMA, which process is not stationary why does the autocorrelation for ma(1) process vary? what is autocorrelation for ma(1) when process is a process, the autocorrelation which process has the same autocorrelation pattern as ma(1) what is the autocorrelation of ma when the autocorrelation t is positive, autocorrelation is negative and autocorrelation is positive. what is the autocorrelation of ima what is the autocorrelation of ima how to find autocorrelation for IMA what is an autocorrelation in ima what is the autocorrelation of IMA(1,1) process how does autocorrelation of nonstationary IMA process differ which is an example of a nonstationary autocorrelation process? what is the autocorrelation in ima what is the autocorrelation of ima what is the normal autocorrelation of ima? what is the autocorrelation of IMA(1,1) process what is the autocorrelation of ima what is the autocorrelation of the ima process