Economy
There are different types of data, including time series and cross-sectional data. Time series data consists of measurements of the same variable over time. Marketers will often use time-series data, for example if a company is new and building its brand, it can take surveys on a monthly basis for its first few years to measure how many people are aware of its brand. This would be a dependent variable, and the company's marketing efforts the independent variable. Cross-sectional data is a set of data that may be in the same time, but examines different populations. The same company, in its marketing study, might look at brand recognition to gauge the effectiveness of its marketing in different populations -- such as different age cohorts, or in different countries. This information can be useful to the marketer in studying its reach to those different populations.
A multiple regression considers the effects of multiple independent variables on a single dependent variable. If there is only one independent variable, it is a linear regression. A multiple regression is a common tool in marketing, because it seeks to derive explanatory factors in complex, real-world environments. For example, suppose a researcher wanted to analyze box office receipts for new movies. There are a number of factors that go...
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