Lexus, Inc. The makers of the Lexus automobile have steadily increased their sales since their U.S. launch in 1989. However, the rate of increase changed in 1996 when Lexus introduced a line of trucks. The sales of Lexus from 1996 to 2005 are shown in the table.6 Year 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Sales (thousands of vehicles) 80 100 155 180 210 224 234 260 288 303 a. Plot the data using a scatterplot. How would you describe the relationship between year and sales of Lexus?b. Find the least-squares regression line relating the sales of Lexus to the year being measured.c. If you were to predict the sales of Lexus in the year 2015, what problems might arise with your prediction?

Lexus, Inc. The makers of the Lexus automobile have steadily increased their sales since their U.S. launch in 1989. However, the rate of increase changed in 1996 when Lexus introduced a line of...

Lexus, Inc. The makers of the Lexus automobile have steadily increased their sales since their U.S. launch in 1989. However, the rate of increase changed in 1996 when Lexus introduced a line of trucks. The sales of Lexus from 1996 to 2005 are shown in the table.⁶

Year

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

Sales (thousands

of vehicles)

100

155

180

210

224

234

260

288

303

a. Plot the data using a scatterplot. How would you describe the relationship between year and sales of Lexus?

b. Find the least-squares regression line relating the sales of Lexus to the year being measured.

c. If you were to predict the sales of Lexus in the year 2015, what problems might arise with your prediction?

May 22, 2022

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Lexus, Inc. The makers of the Lexus automobile have steadily increased their sales since their U.S. launch in 1989. However, the rate of increase changed in 1996 when Lexus introduced a line of...

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