# Math Help - mean+std

1. ## mean+std

Hi guys!

I have calculate mean (but I normalized the mean in percentage) of some data with Matlab and found the standard deviation as well.

Later, I calculated standard deviation+mean and standard deviation-mean! (standard deviations were normalized in percentage)

The weird thing is that I got mean+standard deviation, higher than 100% is that possible?

I cannot evaluate this result by myself, if it is correct (possible) or not?

What do you think?

2. Originally Posted by problady
Hi guys!

I have calculate mean (but I normalized the mean in percentage) of some data with Matlab and found the standard deviation as well.

Later, I calculated standard deviation+mean and standard deviation-mean! (standard deviations were normalized in percentage)

The weird thing is that I got mean+standard deviation, higher than 100% is that possible?

I cannot evaluate this result by myself, if it is correct (possible) or not?

What do you think?
That is incomprehensible, how did you normalise the mean exactly?

CB