Chapter 2: Main Application
49
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“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
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“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
decimal random values.
[randList]
3
w
Generate a list of five elements that contain random
values in the range of 1 through 6.
[randList]
5
,
1
,
6
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“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
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.
[randNorm]
8
,
68
w
Randomly produce the body lengths of five infants in
the above example, and display them in a list.
[randNorm]
8
,
68
,
5
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“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
])
