Question: The given frequency table shows the distribution in mega tonnes (Mt) of carbon dioxide emissions from fossil fuel in Canada over the 30-year period from

The given frequency table shows the in mega tonnes (Mt) of carbon dioxide emissions from fossil fuel in Canada over the 30-year period from 1965 to 1994.

Find the standard deviation of the data summarized in the given frequency table.

Carbon Dioxide Emissions (Mt) 250 to less than 300 300 to less than 350 350 to less than 400 400 to less than 450 450 to less than 500 Frequency 12

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