The Web site that contained the American black bear data listed in Problem 28 actually had a
Question:
The Web site that contained the American black bear data listed in Problem 28 actually had a bear whose height is 141.0 cm and weight is 100 kg incorrectly listed as 41.0 cm tall.
Total Length (cm) .....Weight (kg)
139.0 ..........110
138.0 .......... 60
139.0 .......... 90
120.5 .......... 60
149.0 .......... 85
141.0 ..........100
141.0 .......... 95
150.0 .......... 85
166.0 ..........155
151.5 ..........140
129.5 ..........105
150.0 ..........110
(a) Redraw the scatter diagram with the incorrect entry.
(b) Recompute the linear correlation coefficient using the data with the incorrect entry.
(c) Explain how the scatter diagram can be used to identify incorrectly entered data values. Explain how the incorrectly entered data value affects the correlation coefficient.
Step by Step Answer:
a b We recalculate the correlation coefficient using the computational formula x i y i x i 2 y i 2 x ...View the full answer
