Question

For the data given below, answer parts (a) through (f). х y -21 101 - 18 121 - 16 119 - 15 131 - 11 141 (a) Draw a scatter plot. Choose the correct graph below. ОА. Q 150- OB O c. OD @ Q 150- 150- 150- -30 -30 0 -30 (b) Find the equation of the line containing the first and the last data points. (Type an equation. Type your answer in slope-intercept form. Use integers or fractions for any numbers in the equation.) (c) Graph the line found in part (b) on the scatter plot. Choose the correct graph below. ОА. OB. OC. OD 150 a 1501 1501 a 150 a (d) Use a graphing utility to find the line of best fit. y=x+ (Type integers or decimals rounded to four decimal places as needed.) (e) What is the correlation coefficient r? re (Type an integer or decimal rounded to three decimal places as needed.) (f) Use a graphing utility to draw the scatter plot and graph the line of best fit on it. Choose the correct graph below. ОА. ов. OC. OD Q Q a Q Q Xmin = -30, Xmax = 0, Xscl = 5, Ymin = 90, Ymax = 150, Yscl = 10 Xmin = - 30, Xmax = 0, Xscl = 5, Ymin = 90, Ymax = 150, Yscl = 10 Xmin = -30, Xmax = 0, Xscl = 5, Ymin = 90, Ymax = 150, Yscl = 10 Xmin = -30, Xmax = 0, Xscl = 5, Ymin = 90, Ymax = 150, Yscl = 10

Answer 1

☺ la) opton B Graph given below] (6) AC -21, 101). -B(-11,141 + Y-141 10 B – 141 a til -211+ Y = 4 X +185 (c) option (c) is correct 3.8613x + 185.15328 (e) Correlation Coefficient 0.95749 option (1) is correct. CS Scanned with CamScanner

140 135 130 125 Columna 120 115 110 +105 100 -21 -20 -19 -18 -17 -15 -14 -13 -12 -11 -16 Columni

151 - 141 Y-Dependent 131 121 111 1015 -21 -18 -15 -12 -9 X - Independent Regression Line (j = 3.86X+ 185.15)

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