source: Take the square root of the variance.
target: Take the variance's square root.
references: Take the variance's square root. Take the square root of the variance. Start with the variance, and then calculate the square root of this figure. Take the square root of the average of the squared differences from the simple average of the numbers. Take the square root of the difference. Find the square root of the change. Take the square root of the difference. Take the square root of the number. Take the number multiplied by itself of the math problem. Find the square root.