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Scatter graph of the data with a trendline

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Reference no: EM13843305

Open the file Cars and Trucks.

a. Make a scatter graph of the data with a trendline, equation, and R2 value. Copy and paste your graph here.

b. Is the data linear? Explain why or why not?

c. Use the equation of the trendline to predict how many cars there will be in the US in the year 2013. How confident are you in this prediction? Why?

d. Use the equation of the trendline to predict the number of cars in US in 2050. How confident are you in this prediction? Why?

e. Use the equation of the trendline to predict when there were no cars in the US. How confident are you in this prediction? Why?

Years

Number (millions)


1970

103.45

1975

127.12

1980

149.48

1985

165.10

1990

181.98

1991

181.33

1992

183.67

1993

187.32

1994

190.79

1995

194.13

1996

198.86

1997

199.97

1998

203.17

1999

207.79

2000

212.71

2001

221.82

2002

220.93

2003

222.86

2004

228.28

2005

231.90

Reference no: EM13843305

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