Global temperature changes You can download here (excel file) the average world global temperature since 1880 (data from NASA's Goddard Institute for Space Studies). Fit the data set using the model T=a o
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+a 1
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t+a 2
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t 2
+a 3
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t 3
where T is the average global world temperature in degree Celsius and t is the numbers of years since 1880 (e.g. for 2020 that would be t=2020−1880=140 ). Use 16 digits in your calculations and give the answers with at least 5 significant digits a o
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=
a 1
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=
a 2
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=
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The root mean square error RMSE is According this model, how much will be the average world temperature in 2040 ? (Give your answer with at least three significant figures) Average world temperature in 2040