Estimate the demand forecast for the year 1992, using exponential smoothing method. Assume X = 0.3 take the forecast for the year 1984 as 160 plot the actual demand and forecast values on the graph paper.
Year 1984 1985 1986 1987 1988 1989 1990 1991
Demand 180 168 159 170 188 205 190 210
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