Casio FXCP400 u“rand” Function, “randList” Function, u“randBin” Function, u“randNorm” Function

u“rand” Function

The “rand” function generates random numbers. If you do not specify an argument, “rand” generates 10-digit decimal values 0 or greater and less than 1.

Specifying two integer values for the argument generates random numbers between them.

Problem	Operation
Generate random numbers between 0 and 1.	[rand] w
Generate random integers between 1 and 6.	[rand] 1 , 6 w

u“randList” Function Syntax: randList(n [, a, b])

Function:

•Omitting arguments “a” and “b” returns a list of n elements that contain decimal random values.

•Specifying arguments “a” and “b” returns a list of n elements that contain integer random values in the range of “a” through “b”.

Description:

•“n” must be a positive integer.

•The random numbers of each element are generated in accordance with “RandSeed” specifications, as with the “rand” function.

Problem	Operation
Generate a list of three elements that contain	[randList] 3 w
decimal random values.
Generate a list of five elements that contain random	[randList] 5 , 1 , 6 w
values in the range of 1 through 6.

u“randNorm” Function

The “randNorm” function generates a 10-digit normal random number based on a specified mean  and standard deviation  values.

Syntax: randNorm(,  [, n])

Function:

•Omitting a value for “n” (or specifying 1 for “n”) returns the generated random number as-is.

•Specifying a value for “n” returns the specified number of random values in list format.

Description:

• “n” must be a positive integer, and “ ” must be greater than 0.

Problem	Operation
Randomly produce a body length value obtained in	[randNorm] 8	, 68 w
accordance with the normal distribution of a group
of infants less than one year old with a mean body
length of 68 cm and standard deviation of 8.
Randomly produce the body lengths of five infants in	[randNorm] 8	, 68 , 5 w
the above example, and display them in a list.

u“randBin” Function

The “randBin” function generates binomial random numbers based on values specified for the number of trials n and probability P.

Syntax: randBin(n, P [, m])

Chapter 2: Main Application 49