Data Analysis: Tax Returns The table shows the number (in millions) of individual tax
Chapter 9, Problem 61(choose chapter or problem)
Data Analysis: Tax Returns The table shows the number (in millions) of individual tax returns filed in the United States from 1998 to 2003. (Source: Internal Revenue Service) (a) Find the first differences of the data shown in the table. (b) Use your results from part (a) to determine whether a linear model can be used to approximate the data. If so, find a model algebraically. Let represent the year, with corresponding to 1998. (c) Use the regression feature of a graphing utility to find a linear model for the data. Compare this model with the one from part (b). (d) Use the models found in parts (b) and (c) to estimate the number of individual tax returns filed in 2008. How do these values compare?
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