Sorry, I was having difficulty with the equation editor on here. I've attached my problem as a picture file.

I need to show that the two equations are equal, and I'm not sure where to begin.

Thanks!

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- January 20th 2010, 08:47 AMchemekydievariance problem (i think)
Sorry, I was having difficulty with the equation editor on here. I've attached my problem as a picture file.

I need to show that the two equations are equal, and I'm not sure where to begin.

Thanks! - January 20th 2010, 09:01 AMPlato
Assuming that is the conjugate of the complex number ,

**that statement is false**.

.

Note that and - January 20th 2010, 10:37 AMCaptainBlack
- January 20th 2010, 01:15 PMchemekydie
@Plato - x-bar is not a conjugate

@CaptainBlack -

In your process, what happens to the x double bar? How does that get factored out? - January 20th 2010, 01:33 PMPlato
- January 20th 2010, 02:14 PMCaptainBlack
- January 20th 2010, 02:16 PMCaptainBlack
- January 20th 2010, 02:38 PMchemekydie
x-bar is the mean.

I was under the assumption that x double bar is the average of the means. I'm not aware that x double bar can be transformed back to regular x bar.

Am I missing something? - January 20th 2010, 02:44 PMCaptainBlack
- January 21st 2010, 07:02 AMchemekydie
- January 21st 2010, 08:16 AMPlato