compute μ and σ for the year.

Statistics
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Feb 26th, 2015

class-marks      x          persantage% 

18-28              23              10%

29-39              34              41% 

40-50             45                22%

51-61            56                  13%

62 over          67                 14%

62   OVER GROUP AND MIDPOINT67  

MEAN AND STANDERD DAVIATION 0F THE POPULATION






Feb 26th, 2015

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