The inclusion of data parameters and random number generating parameters has prompted more statistical functions which can calculate summary statistics.

For example. If $p=randnormal(50,15,30), $p will return a data parameter with 30 random numbers which have been taken from a probability density function with mean of 50 and standard deviation of 15.

Measures of Central Tendency

mean($p)
median($p)
mode($p)

Note that mode will return one or two modes if they exist.

Measures of Dispersion

sd($p) Sample standard deviation
sdp($p) Population standard deviation
variance($p) Variance
iqr($p) Interquartile range.
range($p) Range

Other Measures

count($p) Counts the number of values in the data parameter (equivalent to $p[0])
lq($p) Lower quartile
max($p) Maximum value
maxref($p) Reference of the maximum value (ie, this will return 3 if the third value is the maximum)
min($p) Minimum value
minref($p) Reference of the minimum value
sum($p) Sum of the values in $p
uq($p) Upper quartile