If a sample of 132 customers were taken from a population of 2340 customers, s^2 could refer to the variance of how many of the customers' ages?

A. Neither 132 nor 2340
B. 132
C. Both 132 and 2340
D. 2340

Question

If a sample of 132 customers were taken from a population of 2340 customers, s^2 could refer to the variance of how many of the customers' ages?

 		A.	Neither 132 nor 2340
 		B.	132
 		C.	Both 132 and 2340
 		D.	2340

anonymous · Answer

@mathmate

anonymous · Answer

@pooja195

mathmate · Answer

In the usual statistics convention,
$s^2$ stands for sample variance, and $\sigma^2$ for population variance.

(By the way, I now know what level of statistics your working on, hence the context to give a more definite answer).
@Tallan

anonymous · Answer

so if the s^2 is the sample it would be 132.?

mathmate · Answer

Correct!  Well done! :)

anonymous · Answer

Thanks! I was a little confused at first but i wrote down what they are and i figured it out... I have one question.. It was from one of my previous questions.. i dont remember which but its like a u kinda thing. Whats that mean again?

mathmate · Answer

In the same vein,
$\mu$ stands for population mean, and $\bar{x}$ represents sample mean.

mathmate · Answer

$\mu$ is a lower case Greek letter, pronounced "mu".
$\sigma$ is a lower case Greek letter, pronounced "sigma".

anonymous · Answer

Ok thank you so much!! That is a big help for me!!

mathmate · Answer

You're welcome!  :)