Free Hand Curve Method

 Method of free Hand Curve:-

Plot the given date on a graph paper and join the plotted points by means of a straight line. Observe the up and down movements on the graph and draw a straight line freehand passing through the plotted points in a way such that the general direction of change in values is indicated. The trend values for the given periods can be read from the graph.

for further detail please watch this video......

https://www.youtube.com/watch?v=SzJP3LdJDGU&t=3s