garydesir1
garydesir1 garydesir1
  • 01-06-2016
  • Mathematics
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Аноним Аноним
  • 01-06-2016
Mean = (Sum of values)/(Number of values)

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

Range = Highest Value - Lowest Value

[tex]Range\\ \\ =72-54\\ \\ =18\\ \\ [/tex]
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