MATH 92-121 2. 2 REGRESSION & LINEAR MODEL Name : SEC# DUE : Tue/ 10-4-2022 (IN-CLASS 1.) The amount of money, in Millions of Dollars spent annually on advertising for i-phone is \\ TAKE HOME shown in the data table given: Use your Ti Graphing Utility device Assign Q:3 a.) Align the x-Value Data-set considering the validity of yrs (x) is after 2000, Create a Scatter Plot sketch of the i-phone Advertisement spending data . [ DATA SET ] A) Perform a linear regression (Using Ti) to compute the linear equation Yrs ( x) Aligned |Ad-Spend y = ax + b that models a best-fit line for the Advertising Data (y) as a fetn. of Starts at (x) (y ) No.of yrs (x) after year 2000. 2000 ( $ Millions ) > Also, find the value of I (Regress Coeff.) measuring goodness of best-fit 2006 250 2007 400 PIX.) 2008 B-b.) Use a straight-edge to sketch the best-fitting line (model of form y=mx+b ) 540 through the data-Pts PI & P2 for yr-2007 & 2012 respectively Use Aligned x-value data to find an equation of the line (Model). SLOPE : An = yay 2009 650 2010 760 Show all analysis & calc.: a.) From the model data obtain the Linear Eqn in form (y=mx+b). FOLey-y,= m(X-X1 2011 850 2012 What does the slope m tell you about Advertisement spending ?- 900 P2 (KZY/2) Ans: Show CALCULATION for the model EDL 9 ANS part a) ine). 2013 Y 13 Y17, &2017 b) According to the model, what is the percent increase ( y2 - y ) / y1 * 1009% in the amount of spending (y) from 2011 to 2012 GRAPH - 4 = ax+ + c) What is the average rate of change of spending in advertisement for the last 4-yrs (i.e. from 2009 to 2012) d) Based on the linear model, find the Add. Spending forecast for the year 2019 i.e. Y13.= f(19 A LSCATTER Plot e) Sketch Graph of Regression Model y=ax +6 and 2-PT ST-EDGE LINEAR EOL Model y=MX+6. > Compare the 2-Models - the difference -> & answer ( a ) here