Question: Global warming. Have average global temperatures been increasing in recent years? Here are annual average global temperatures for the last 20 years in degrees Celsius.

Global warming.Have average global temperatures been increasing in recent years?

Here are annual average global temperatures for the last 20 years in degrees Celsius.

(a) Find the least-squares regression line for predicting average global temperature from year.

Temperature =(0.01) + (0.0001)YearYear

(b) An environmentalist uses the line, based on the 20 years, to predict average global temperatures in 2050. What is the prediction?

Temperature (0.01) = C

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