If $X _ { 1 } , X _ { 2 } , X _ { 3 } , \ldots , X _ { N }$ are the $N$ observations of a variable from a population, then the population mean is symbolized by
A) $\mu$
B) $X$
C) $\Sigma$
D) $X$.

Question

Quizplus · Accepted Answer

The population mean is symbolized by $\mu$, which represents the average of all observations in the population.

If X1,X2,X3,…,XNX _ { 1 } , X _ { 2 } , X _ { 3 } , \ldots , X _ { N }X1​,X2​,X3​,…,XN​

If $X _ { 1 } , X _ { 2 } , X _ { 3 } , \ldots , X _ { N }$