stdev(x1,x2,…)
The standard deviation of the set of numbers x1 to x9 is the square root of their variance.

Example: stdev(10,1,0,0,9)

var(x1,x2,…)
The variance is the average of the squared deviations from the mean of the set of numbers x1 to x9.
Example: var(10,1,0,0,9)

mdev(x1,x2,…)
The mean deviation is the average of the deviations of the set of numbers x1 to x9 from their mean value.
Example: mdev(10,1,0,0,9)

range(x1,x2,…)
The difference between the largest and smallest numbers from the set of numbers x1 to x9.
Example: mean(10,1,0,0,9)

mean(x1,x2,…)
The mean (average) of the set of numbers x1 to x9.


Example: mean(10,1,0,0,9)

sum(x1,x2,…)
The sum of the set of numbers x1 to x9.


Example: sum(10,1,0,0,9)