Calculate Standard Deviation from Weights

Below is a dataset representing the weights (in kg) of 12 different individuals:

55, 78, 72, 84, 60, 65, 70, 80, 90, 57, 62, 75.

Using this data, determine the standard deviation of the weights.

The standard deviation can be calculated using the formula:

$$ ext{Standard Deviation} =\frac{ ext{Square root of the variance}}{N} $$

where variance is defined as:

$$ ext{Variance} =\frac{ ext{Sum of squares of deviations from the mean}}{N} $$