Mathematica 9 is now available
Student Support Forum
-----
Student Support Forum: 'NormalDistribution Question' topicStudent Support Forum > General > "NormalDistribution Question"

Next Comment >Help | Reply To Topic
Author Comment/Response
Matt
04/07/03 5:19pm

Hello,

I have just installed Mathematica, and wanted to try it out using some examples from the manual. But when I try and run them (by copying and pasting commands DIRECTLY from the online manual), I don't get the results shown in the manual. I'm including below my syntax and the output, which is a direct paste from the Standard Packages/Statistics/NormalDistribution example in Mathematica... Then below you can see what the manual says should have happened!

I'm just starting here, so any help would be appreciated...!

My syntax:
In[33]:=
<<Statistics`NormalDistribution`

In[34]:=
ndist=NormalDistribution[0,1]

Out[34]=
NormalDistribution[0,1]

In[35]:=

pdf=PDF[ndist,x]

Out[35]=
PDF[NormalDistribution[0,1],x]

In[36]:=
%

Out[36]=
PDF[NormalDistribution[0,1],x]

In[37]:=
CDF[ndist,-2]

Out[37]=
CDF[NormalDistribution[0,1],-2]

-----------Manual----------------------------
In[1]:=
<<Statistics`NormalDistribution`

Here is a symbolic representation of the normal distribution with zero mean and unit variance.

In[2]:=
ndist = NormalDistribution[0, 1]

Out[2]=
NormalDistribution[0,1]

This gives its probability density function.

In[3]:=
pdf = PDF[ndist, x]

Out[3]=
\!\(\[ExponentialE]\^\(-\(x\^2\/2\)\)\/\@\(2\ π\)\)

In[5]:=
CDF[ndist, -2]

Out[5]=
\!\(1\/2\ \((1 - Erf[\@2])\)\)



URL: ,

Subject (listing for 'NormalDistribution Question')
Author Date Posted
NormalDistribution Question Matt 04/07/03 5:19pm
Re: NormalDistribution Question Henry Lamb 04/10/03 11:29pm
Next Comment >Help | Reply To Topic