SAMPLING DISTRIBUTIONS

1. Is the theoretical distributions of sample probabilistic that would be obtained from a large number of random samples of equal size from a population?

2. It is the standard deviation symbol

1. The standard deviation of the sampling distribution is called __________

1. Is the formula of standard error ?

The standard error can include the variation higher that the calculated mean of the population

If the sum of identically distributed independent random variables has a finite variance, then it will (approximately) be normally distributed

is the formula to calculate the z-score ? $Z=(\overline{X}-σ^2)/(σ/√n)\$  

The more data points involved in the calculations of the mean, the smaller the standard error tends to be.

The normal distribution has the same mean as the original distribution and a variance that is equal to the original variance divided by n.

When the standard error is small, the data is said to be more representative of the true mean. In cases where the standard error is large, the data may have some notable irregularities.