Stitz-Zeager_College_Algebra_e-book

# and it is exactly because the exponent is even8 one

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Unformatted text preview: his then becomes a Civics lesson in honesty, as you shall soon see. There are two charts given below. One has my weight for the ﬁrst eight Thursdays of the year (January 1, 2009 was a Thursday and we’ll count it as Day 1.) and the other has my weight for the ﬁrst 10 Saturdays of the year. 176 Linear and Quadratic Functions Day # (Thursday) My weight in pounds Day # (Saturday) My weight in pounds 1 8 15 22 29 36 43 50 238.2 237.0 235.6 234.4 233.0 233.8 232.8 232.0 3 10 17 24 31 38 45 52 59 66 238.4 235.8 235.0 234.2 236.2 236.2 235.2 233.2 236.8 238.2 (a) Find the least squares line for the Thursday data and comment on its goodness of ﬁt. (b) Find the least squares line for the Saturday data and comment on its goodness of ﬁt. (c) Use Quadratic Regression to ﬁnd a parabola which models the Saturday data and comment on its goodness of ﬁt. (d) Compare and contrast the predictions the three models make for my weight on January 1, 2010 (Day #366). Can any of these models be used to make a prediction of my weight 20 years from now? Expl...
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## This note was uploaded on 05/03/2013 for the course MATH Algebra taught by Professor Wong during the Fall '13 term at Chicago Academy High School.

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