Answering Machines | USA Annual Unit Sales | Statistical Abstract of the United States

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DID:	2
Case Name:	Answering Machines | USA Annual Unit Sales | Statistical Abstract of the United States
Product:	Answering Machines
Region:	USA
Data Source:	Statistical Abstract of the United States
Measure:	Unit Sales
Interval:	Annual
Period:	1978-1989
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Case Used by:	Jiang, Zhengrui, Frank M. Bass, Portia Isaacson Bass. 2006. The virtual Bass model and the left-hand truncation bias in diffusion of innovation studies. International Journal of Research in Marketing 23 (1) 93-106.
	Golder, Peter N., Gerard J. Tellis. 1998. Beyond diffusion: an affordability model of the growth of new consumer durables. Journal of Forecasting 17 259-280.
	Golder, Peter N., Gerard J. Tellis. 1997. Will it ever fly: modeling the takeoff of really new consumer durables. Marketing Science 16 (3) 256–270.
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Year	Unit Sales
1978	400000
1979	495000
1980	579000
1981	697000
1982	868000
1983	2094000
1984	2628000
1985	3306000
1986	4858000
1987	7332000
1988	10100000
1989	12160000

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