Standard Deviation is calculated from:

Correct option is B

Standard Deviation (SD) is a measure of the dispersion or spread of a set of values. It is calculated using the arithmetic mean, which represents the central value of the dataset. The formula for standard deviation involves the squared differences between each data point and the arithmetic mean.
Information Booster:
· Standard Deviation helps understand data variability and is widely used in statistics, finance, and research.
· Smaller SD indicates data points are closer to the mean, while a larger SD suggests greater variability.
· Variance is the square of the standard deviation.
Additional Knowledge:
1. Range: Measures the difference between the maximum and minimum values but doesn't relate directly to SD.
2. Median: Represents the middle value of a dataset and isn't used in the calculation of SD.
3. Mode: Represents the most frequently occurring value and doesn't contribute to SD calculations.