What is the value of the standard deviation $\sigma$? [closed]

1. How do you find standard deviation from sigma?
2. What is the ∑ in standard deviation?
3. What is the value of the standard deviation?
4. What is the standard deviation in Six Sigma?

How do you find standard deviation from sigma?

The equation for finding standard deviation is σ=√[Σ(x-x̄)²/n]. To find it, square the difference of each value of the dataset and the mean and add up all those values. Then divide by the total number of values, and take the square root.

What is the ∑ in standard deviation?

Overview of how to calculate standard deviation

where ∑ means "sum of", x is a value in the data set, μ is the mean of the data set, and N is the number of data points in the population.

What is the value of the standard deviation?

The standard deviation is the average amount of variability in your dataset. It tells you, on average, how far each value lies from the mean. A high standard deviation means that values are generally far from the mean, while a low standard deviation indicates that values are clustered close to the mean.

What is the standard deviation in Six Sigma?

The standard deviation is the basis of Six Sigma. The number of standard deviations that can fit within the boundaries set by your process represent Six Sigma. If you can fit 4.5 standard deviations within your process specifications then you have obtained a Six Sigma process for a long term scale.