Sampling error

• Could the difference of 0.23 kg =(3.5kg-3.27kg) be
  real or could it be due purely to chance in sampling?


• ‘Apparent’ different betw population mean and the
  random sample mean that is due purely to chance in
  sampling is called sampling error


• Sampling error does not mean that a mistake has
  been made in the process of sampling but variation
  experienced due to the process of sampling
  
  
  • Sampling error reflects the difference betw the value
    derived from the sample and the true population value
  
  
  
  


• The only way to eliminate sampling error is to
  enumerate the entire population