The Distribution of the Sample Mean  
Summary 
if a random sample of size n is taken from any distribution with a mean of μ and a standard deviation of σ then the distribution of the sample means will have a :
the standard deviation of the sample means is also known as the standard error of the means. if the sample size n is large, say greater than 30, then the distribution of the sample means will be approximately normal. 
Key Skills


Vocabulary 
sample, population, standard deviation, probability distribution, spreadsheet, standard error, histogram, sample means, normal distribution 