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158 Chapter 4 Estimating and Forecasting Demand

FIGURE 4.5

Seasonal Toy Sales over 10 Years

Trend

line

40

Quarterly Time Periods, 1995–2004

Quantity of Toys Sold (Millions)

230

130

38363432302826242220181614121086420

Seasonal Toys Sales over 10 Years

1 Winter 1995 133 21 Winter 2000 158

2 Spring 1995 135 22 Spring 2000 169

3 Summer 1995 140 23 Summer 2000 171

4 Fall 1995 181 24 Fall 2000 209

5 Winter 1996 141 25 Winter 2001 172

6 Spring 1996 170 26 Spring 2001 207

7 Summer 1996 172 27 Summer 2001 209

8 Fall 1996 186 28 Fall 2001 214

9 Winter 1997 143 29 Winter 2002 183

10 Spring 1997 148 30 Spring 2002 212

11 Summer 1997 150 31 Summer 2002 184

12 Fall 1997 194 32 Fall 2002 219

13 Winter 1998 154 33 Winter 2003 185

14 Spring 1998 156 34 Spring 2003 190

15 Summer 1998 158 35 Summer 2003 222

16 Fall 1998 196 36 Fall 2003 227

17 Winter 1999 153 37 Winter 2004 199

18 Spring 1999 161 38 Spring 2004 228

19 Summer 1999 193 39 Summer 2004 230

20 Fall 1999 204 40 Fall 2004 229

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