s as in sd for standard deviation or se for standard error; std as in standard (year or class) in school; possibly others.
The answer depends on the value of the new point. If the new value is near the mean then the new standard deviation (SD) will be smaller, if it is far away, the new SD will be larger.
The area within the normal curve between -1 standard deviation (SD) and +1 SD is approximately 68%. This means that about 68% of the data falls within one standard deviation of the mean in a normal distribution.
http://www.easycalculation.com/statistics/standard-deviation.php This site will calculate SD for you if you have any data
It is not called anything special, just 2 standard deviations or 3 sd.
455 SD
455 million in standard form is 4.55 × 108
58
Micro-SD
Not a lot. After all, the sample sd is an estimate for the population sd.
Multiply them as you would any two numbers. However, you should note that the standard deviation of a product of two variables is not the product of their standard deviations. That is, SD(XY) ≠SD(X)*SD(Y)
Standard Deviation (SD) = sqrt(Variance(Var)) SD = sqrt(Var) Sd = sqrt(324) SD = 18
Nope, just a bog-standard SD card.
People sometimes use the standard deviation (SD) and standard error of the mean (SEM) synonymously; but technically they refer to 2 different things. SD is the SD of 1 sample and SEM is the SD of numerous samples taken together. So, to answer your question, we will say the SEM is 15 (but since you have 1 sample of 9 men, call it SD).
The Wii does not have a Micro SD slot, you'd need to first insert it into a Micro SD to standard SD adaptor and put it in the regular SD card slot.
Getting a USB memory card can prevent unwanted writes. This can go for a USB memory card, micro SD and a standard SD memory card.
Yes, the Wii will be able to read the Micro SD card by using the standard SD card adapter.