From: WilDscOp (wildscop@yahoo.com)
Date: Fri 26 Dec 2003 - 15:52:43 EST
Message-id: <5.1.0.14.2.20031226102410.009ff0d0@mail.dhaka.net>
Dear all,
Can anyone please help me about any of the following questions:
--------------------------------------------
1. How can i find "factorial" of any number in R? I tried
> prod(170:1) # to find factorial of 170 or 170!
Is it the only procedure - or R has any better process / operational
character to calculate factorial? Also, is it possible to calculate
factorial of 500? Or is there any statistical table available for this?
--------------------------------------------
2. Is there any direct procedure / package in R to find "permutation /
combination"?
--------------------------------------------
3. Can i find Probability Density of "Hypergeometric Disribution" in R,
given all values of the parameter? I can not find any table of
Hypergeometric Disribution (if such tables are available on the internet,
please let me know).
--------------------------------------------
4. Is there any way i can perform "Quality control" calculations (like
p-chart / np-chart / c-chart / u-chart / OC curves / AOQ / AOQL / ATI / ASN
/ plan design) in R? I guess such procedures are available in SAS /
Statistica or other statistical softwares. If there are such operations in
R, please refer me to the appropriate documentations.
--------------------------------------------
5. Particularly, if we have lots of size N = 50000 and the receiving
inspection procedure used in single-sampling plan with n = 50 and c = 1;
then i need to draw the type-A and type-B operating characteristic curve
for the plan. Can i do it on R?
----------------- ---------------------------
Any comment / suggestion / idea / web-link / replies will be gladly
accepted. Thanks for your time.
_______________________
Mohammad Ehsanul Karim <wildscop@yahoo.com>
Institute of Statistical Research and Training
University of Dhaka, Dhaka- 1000, Bangladesh
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