There are different views about the role of advertising in an economy. The ultimate objective of advertising is to increase sales. This paper studies the effectiveness of advertising on sales using simple regression models and dummy variable regression models with a cross-section data set of 100...

The Bharat Sanchar Nigam Limited (BSNL) has introduced a new tariff package for the urban and rural subscribers from May 1, 2003. The new tariff has made revolutionary changes in the tariff structure by providing various options for different categories of subscribers. The new tariff has tried...