The Mean of the Sample Average $\bar { Y }$ $E ( \bar { Y } )$

question 43

Multiple Choice

The mean of the sample average $\bar { Y }$ , $E ( \bar { Y } )$ , is

• A) \(\frac { 1 } { n } \mu _ { \gamma }\)
• B) \(\mu_y\)
• C) \(\frac { \mu _ { y } } { \sqrt { n } }\)
• D) \(\frac { \sigma _ { y } } { \mu _ { y } }\) for n > 30.

---

Definitions:

Cell A

In the context of matrices or spreadsheets, it typically refers to the top-left cell or the first cell in a table.

Compounded Annually

A method of calculating interest where the interest earned over a period is added to the principal, and the total becomes the basis for calculating interest in the next period, occurring once per year.

Positively Correlated

A relationship between two variables where both either increase or decrease together.

Negatively Correlated

A statistical relationship between two variables in which one variable increases as the other decreases.