garydesir1 garydesir1

31-05-2016
Mathematics

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Verified Answer :

Anonymous Anonymous

01-06-2016

Mean = (Sum of values)/(Number of values)

\(Mean\\ \\ =\frac { 55+62+61+54+68+72+59+61+70 }{ 9 } \\ \\ =\frac { 562 }{ 9 } \\ \\ =62.4\quad mph\quad (1\quad d.p)\\ \\\)

Range = Highest Value - Lowest Value

\(Range\\ \\ =72-54\\ \\ =18\\ \\\)

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