Search

Z-Distribution Resources

Blogs

We all heard about the simplification to use a t-distribution when sample size is small (n<30) and Z-distribution when n is large (n>30); indeed, with increasing n, the distribution of the sample means will converge to the normal distribution thanks to the CLT. But what truly happens when n is not large enough? The requirements for a Z-distribution are: 1) The sample mean... read more