Tag sample

The Distribution of a Linear Combination

$$ $$ Let $X_1\dots X_n$ have means ${\mu }_i$ and variances...

Posted by Beetle B. on Wed 07 June 2017

The Distribution of the Sample Mean and Sum

Let $X_1\dots X_n$ be a random sample from a distribution with mean $\mu$ and standard deviation $\sigma$. Then:...

Posted by Beetle B. on Wed 07 June 2017

Statistics and Their Distributions

When we take a sample and calculate its mean and standard deviation, this is treated as a random variable for the population...

Posted by Beetle B. on Wed 07 June 2017