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1. sekolah kebangsaan batu gajah melaka (1996-2001) 2. sekolah menengah kebangsaan bandar baru salak tinggi (2002-2004) 3. sekolah menengah sains selangor (2005-2006) 4. centre for foundation studies iium petaling jaya (2007-2009) 4. iium kuantan campus (2009-2014 insyaAllah)

Monday, June 7, 2010

Sample and population

Statistic estimates the population.
- How representative the sample to the population.
- A sample statistic may not be able to get exact value as the population (sampling
error occur)
- different sample of statistic from same population may yield different estimate.
- If sampling is repeated many time, the statistic may approach the true value of population

Standard error is how good a sample mean is representing, larger the SE more crude the data. large sample size reduced SE

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