dalialm
dalialm dalialm
  • 04-03-2018
  • Mathematics
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PLEASE HELP!! Show simple working out

PLEASE HELP Show simple working out class=

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sqdancefan
sqdancefan sqdancefan
  • 04-03-2018
In order to estimate the mean, you need to choose a value to represent the number in each category of accidents. It is often convenient to use the middle value of the range.
.. (4*6 +10*10 +15*6 +20*9)/(6 +10 +6 +9) = 394/31 ≈ 12.7
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