Final answer:
The question involves calculating the standard deviation of a data set, a key concept in statistics that describes the variability of data points.
Step-by-step explanation:
The question requires calculating the standard deviation of a data set, which involves several steps. First, we find the mean (average) of the numbers provided. Next, we calculate each number's deviation from the mean, square those deviations, and find the average of the squared deviations, which is the variance. Finally, the square root of the variance gives us the standard deviation. Since this is sample data, we divide by the number of observations minus one when calculating the variance. Remember, the standard deviation is a measure of the spread of data around the mean, and it's useful for understanding the variability within a set of numbers.