This app calculates and plots the standard normal distribution
frequency and density functions.
One tail, middle, two tail and cumulative density functions can be
calculated together with the raw frequency function.
You may enter directly Z values referred to N(0,1), or X values
referred to a generic N(m, s).
In case of X values, the values for m=mean and s=standard deviation are
also required. If Z values are entered, X values are computed according
to m and s and the other way around.
F-Graph also works as a scientific calculator. You may enter the
calculation clicking on the buttons of the application pad or directly
directly enter the expression as text. Press = to perform the
calculation. The calculator supports multiple level of parentheses. A
parenthesis is automatically appended when a function button is
pressed. You will have then to enter the argument and the closing brace.
Supported calculator functions:
ln(X) logarithm base e
log(X) logarithm base 10
log2 logarithm base 2
exp(X) e to X
rtod radians to decimal degrees
dtor decimal dgress to radians
sqrt(X) square root of X
nthroot(X, N) Nth root of X
pow(N, X) N to X
all common trigonometric functions. Arguments are entered and
returned in radians