Determine whether a linear model might fit the data.
Internet Use. The table below illustrates the world growth in Internet use.
a) Model the data with a linear function. Let the independent variable represent the number of years after 2001; that is, the data points are (0, 494.1), (3, 935.0), and so on. Answers may vary depending on the data points used.
b) Using the function found in part (a), estimate the number of world Internet users in 2012 and in 2015.
Year, x | Number of World Internet Users, y (in millions) |
2001, 0 | 494.1 |
2002, 1 | 679.8 |
2003, 2 | 790.1 |
2004, 3 | 935.0 |
2005, 4 | 1047.9 |
2006, 5 | 1217.0 |
2007, 6 | 1402.1 |
2008, 7 | 1542.5 |
Sources: International Telecommunication Union: ICT Indicators Database
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