Given are five observations for two variables, @ and y. 1 2 3 4 5 4 5 8 9 15 a. Which of the following scatter diagrams accurately represents the data? 1. +16 +12 -4 205 415 3 25 3 35 4 45 5 55 X 7-4 2. ty +16 +12 -8 -4 34 15 2 25 3 35 4 45 5 5,5 X 1-43. 16 +12 -8 +4 495 05 1 15 3 25 3 35 4 45 5 55 X - Select your answer - b. What does the scatter diagram indicate about the relationship between the two variables? There appears to be a - Select your answer - | linear relationship between a and y. c. Try to approximate the relationship between a and y by drawing a straight line through the data. Which of the following scatter diagrams with a trend line accurately represents the data? 1. $16 $12 18 -4 14305 415 7 25 3 35 4 45 5 55 X 1-4"16 -05 O5 15 25 35 45 55 X '16 d. Develop the estimated regression equation by computing the values of be and In using Equation 14.6 and Equation 14.? (to 1 decimal). +i 5: '2; II 3. Use the estimated regression equation to predict the vaiue ofy when a = 3 (to 1 decknal). -, ll