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Atmospheric carbon dioxide is thought to be responsible for global warming.
The table below contains data about the amount of Atmospheric CO2 (in ppm) over the last fifty years.
Year
CO2
1959
315.98
1960
316.91
1965
320.04
1968
323.04
1971
326.32
1975
331.08
1980
338.7
1982
341.4
1984
344.4
1986
347.2
1988
351.5
1990
354.2
1992
356.4
1994
358.9
1996
362.6
1998
366.6
2000
369.4
2002
372.9
2007
383.71
2008
385.54
2009
387.35
(a) Construct a scatter plot for this data. (Either by hand or using Excel)
(b) Comment on the shape.
(c) Find a line of best fit. If doing this by hand, you will need to find the line of best fit by eye and then find the equation. If using excel, use a formula(s) to find the line of best fit.
(d) Using the equation, what was/is the atmospheric CO2 in 2005, 1920, 2020? Comment on the accuracy of your answers.
(e) In your conclusion, comment on the accuracy of modelling this as a straight line given your graph. Consider the accuracy to determine past and present values for CO2.
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