HP 39gII, User Manual

Page: 183 / 355

Using mathematical functions 173
RANDOM
Random number. With no argument, this function returns
a random number between zero and one. With one
integer argument a , it returns a random integer between
0 and a . With three integer arguments, n , a , and b ,
returns n random integers between a and b .
RANDOM
RANDOM(a)
RANDOM(n, a, b)
UTPC
Upper-Tail Chi-Squared Probability given degrees of
freedom, evaluated at value . Returns the probability that
a
χ
2
random variable is greater than value.
UTPC
( degrees , value )
UTPF
Upper-Tail Snedecor’s F Probability given numerator
degrees of freedom and denominator degrees of freedom
(of the F distribution), evaluated at value . Returns the
probability that a Snedecor's F random variable is
greater than value.
UTPF
( numerator , denominator , value )
UTPN
Upper-Tail Normal Probability given mean and variance ,
evaluated at value. Returns the probability that a normal
random variable is greater than value for a normal
distribution. Note: the variance is the square of the
standard deviation .
UTPN
( mean , variance , value )
UTPT
Upper-Tail Student’s t-Probability given degrees of
freedom , evaluated at value. Returns the probability that
the Student's t- random variable is greater than value.
UTPT
( degrees , value )
Real-number functions
Some real-number functions can also take complex
arguments.
CEILING
Smallest integer greater than or equal to value .
CEILING
( value )
Examples:
CEILING(3.2)
returns
4
CEILING(-3.2)
returns
-3