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Statistics assignment

Statistics assignment

Given the data set  
  4 , 10 , 7 , 7 , 6 , 9 , 3 , 8 , 9  
Find  
 a) the mode,  
  b) the median,  
  c) the mean,  
  d) the sample standard deviation.  
  e) If we replace the data value 6 in the data set above by 24, will  the standard deviation increase, decrease or stay the same?