Statistics: Probability and Statistics Functions Calculator

This calculator focuses on probability and statistic functions.

Using the "long press" gesture will display a hint about any key. (Video: Displaying a hint) You can inspect the Key Details to see the formulas and functions for any key.

Label	Description
nrms	Calculates the standard normal cumulative distribution for x.
nrm 1	Calculates the cumulative distribution function for z=value, y=μ, x=σ, 1 tail.
nPr	Calculates the number of ordered ways that x objects can be chosen from a set of y objects.
x!	Calculates the factorial of x.
Γ	Calculates the value the Gamma function for x.
√	Calculates the square root of x.
y^x	Calculates y raised to power of x.
1/x	Calculates the reciprocal of x.
SWAP	Swaps the x and y registers.
÷	Divides y by x.
ROLL	Rolls the stack down.
×	Multiplies y times x.
−	Subtracts x from y.
%	Calculates the x percent of y.
+	Adds y to x.

 

Label	Description
nrms⁻¹	Calculates the inverse of the standard normal cumulative distribution for x.
nrm⁻¹	Calculates the inverse of the cumulative normal distribution function, for z=value, y=μ, x=σ.
nCr	Calculates the number of ways that x objects can be chosen from a set of y objects.
n!!	Calculates the double factorial of x.
ln Γ	Calculates the natural logarithm of the gamma function for x.
nrm	Calculates the probability density function of the normal distribution for z=value, y=μ, x=σ
rand	Calculates a random number greater than or equal to 0 and less than 1.
randBt	Calculates a random number greater than or equal to y and less than x.
srand	Enters a seed for the random number generator using the integer value of x. Use x = 0 for a system generated seed.
last x	Recalls the 'last x' value.
clr m	Clears all of the user memory.
clr s	Clears the stack registers (x, y, z, t).
binmC	Calculates the binomial cumulative distribution for z=k, y=n, x=p.
binmP	Calculates the binomial probability mass for z=k, y=n, x=p.
erf y,x	Calculates the error function (lower (y), upper (x)).
erf x	Calculates the error function (lower 0, upper (x)).
erfc	Calculates the complementary error function of x.
nrms2	Calculates the 2 tail standard normal cumulative distribution.
Δ%	Calculates the percent change from y to x.