Question

If Xy, X2, X3. ..., Xy are the N observations of a variable from a population, then what symbol should be used to represent the population mean?Ο Α. μΟ Β. ΣОс. xOD. X

Answer 1

Recall that the population mean is determined by the formula

$\begin{gathered} \mu=\frac{\sum X_i}{N} \\ \text{where} \\ X_i\text{ are the data sets} \\ N\text{ is the number of observation} \end{gathered}$

This means that the population mean is represented by the symbol

$\mu$