Q.The simplest method of measuring trend of time series is ______.

The simplest method of measuring the trend of a time series is the freehand (graphical) curve method — plot the values against time and draw a smooth free-hand curve through them.

The common methods of measuring trend are: the freehand (graphical) curve method, the method of semi-averages, the method of moving averages, and the method of least squares. Of these, the freehand curve method is the simplest: the observed values are plotted on a graph against time and a smooth curve or straight line is drawn through them by hand so as to pass as eve …