Re: NEED HELP! Mathematica seems to "forget" that a package has been loaded
- To: mathgroup at smc.vnet.net
- Subject: [mg26495] Re: [mg26487] NEED HELP! Mathematica seems to "forget" that a package has been loaded
- From: BobHanlon at aol.com
- Date: Thu, 28 Dec 2000 21:31:29 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
You did not give any examples so I will just give you some examples to check
your syntax.
Needs["Statistics`DiscreteDistributions`"];
dist = PoissonDistribution[mu];
Sum[PDF[dist, x], {x, Sequence @@ Domain[dist]}]
1
Mean[dist] == Sum[x*PDF[dist, x], {x, Sequence @@ Domain[dist]}]
True
{PDF[dist, x], CDF[dist, x], Variance[dist], PDF[PoissonDistribution[7], 10]}
{mu^x/(E^mu*x!), GammaRegularized[Floor[x] + 1, mu], mu,
40353607/(518400*E^7)}
N[PDF[PoissonDistribution[7], 5]]
0.12771666829228964
Bob Hanlon
In a message dated 12/28/00 3:40:42 AM, raygunprez at earthlink.net writes:
>I am still relatively new to the Mathematica environment, so I please
>request that you have some patience.
>
>I am encountering a situation where when I issue the command
><<Statistics`DiscreteDistributions` and attempt to use any of the
>functions therein that during the evaluation of that cell that it does
>
>NOT evaluate to a numerical answer.
>
>This is just one example but there are several other packages such as
>Graphics and Geometry where this is the case...Mathematica responds that
>
>such package has loaded. However, the functions don't evaluate.
>
>If you happen to know of any tips, tricks, or procedures to overcome
>this I would truly appreciate it.
>