One of the following is true relation between sample mean $(\overline{x})$ and population mean $(\mu )$ .

$|\overline {x} - \mu |$ increases when increases the size of samples $\overline {x} = \mu  $, for all sample sizes $|\overline {x} - \mu |$ do not change with size of samples $|\overline {x} - \mu |$ decreases when increases the size of samples

$|\overline {x} - \mu |$ increases when increases the size of samples