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Independent Variables

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  1. The United States of Google: Mapping Google Usage by State

    The effect of each independent variable, for example, median household income and median age, is measured by holding other variables constant. The data for all independent variables in this research was collected from the most recent Census, the...

  2. Search Ad Tools Help Manage Complexity

    Variables May Vary Increasing consolidation and acquisition of search advertising tools by big holding companies is slowly opening a window of opportunity for independent providers. January's JPMorgan estimate that placed global search advertising...

  3. Search Headlines & Links: June 14, 2006

    Search marketing has evolved from relatively simple optimization of web pages into a more sophisticated process involving a number of variables. There are independent efforts here and there, but all players would benefit from a concerted initiative.