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Unformatted text preview: catalogs are requested by Dec 1. x y xy x 2 Σ 18. A company’s annual sales (in units of 1 billion) for its first 5 years of operation are shown: Year 1 2 3 4 5 Sales 0.9 1.5 1.9 2.4 3.0 Plot on a graph; find the equation of the least squares line, and use the line to predict sixthyear sales. x y xy x 2 Σ 22. The table gives the U.S. decennial census figures (in millions) for 19502000. Year 1950 1960 1970 1980 1990 2000 Populatio n 150. 7 179. 3 203. 2 226. 5 248. 7 291.4 Find the equation of the least squares line; use to predict the population for the year 2010. x y xy x 2 Σ...
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This note was uploaded on 04/12/2011 for the course MA 224 taught by Professor Swohead during the Winter '09 term at Purdue.
 Winter '09
 SWOHEAD
 Calculus

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