x x is the symbol for the sample mean and the Greek letter is the symbol for the population mean.
What does this mean ∑?
The symbol indicates a conclusion.
What is this symbol μ?
The Greek letter mu is used to represent the multipliers.
Does MU mean average?
The population mean is indicated by the letter m.
Is Y bar the mean?
It is calculated from a sample y 1, y 2,…, y n of values of Y.