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Functions and commands 319
Seed Sets the seed value on which the random functions operate.
By specifying the same seed value on two or more calculators,
you ensure that the same random numbers appear on each
calculator when the random functions are executed.
RANDSEED(value)
Density
Normal Normal probability density function. Computes the
probability density at value x, given the mean, and
standard deviation, of a normal distribution. If only one
argument is supplied, it is taken as x, and the assumption is
that =0 and =1.
NORMALD([,,]x)
Example:
NORMALD(0.5) and NORMALD(0,1,0.5) both return
0.352065326764.
T Student’s t probability density function. Computes the
probability density of the Student's t-distribution at x, given n
degrees of freedom.
STUDENT(n,x)
Example:
STUDENT(3,5.2) returns 0.00366574413491.
probability density function. Computes the probability
density of the distribution at x, given n degrees of freedom.
CHISQUARE(n,x)
Example:
CHISQUARE(2,3.2) returns 0.100948258997.
F Fisher (or Fisher–Snedecor) probability density function.
Computes the probability density at the value x, given
numerator n and denominator d degrees of freedom.
FISHER(n,d,x)
Example:
FISHER(5,5,2) returns 0.158080231095.
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