Re: Minitab random numbers

On 24 Sep 2005 06:54:16 -0700, joe.noir@xxxxxxxxxxxxxx wrote:

> I am brand new to Minitab - trying to learn it without a manual - for
> my employer no less.
>
> I have a list of 600 Social Work clients, and I need to generate a
> random sample of 100. I can generate a list of random numbers in
> Minitab but it would be ideal if it could generate a list of 100 random
> numbers from the 600 but avoid repeating a previous random number in
> the list.
>
> I suppose I need a distinct 100 from the 600?
>
> Is this possible in Minitab?

The conventional way to "sample without replacement",
by computer, is to assign a random number to each
individual, and then SORT. Take the first 100 in the
new sorted order, or assign to groups, or whatever....

In SPSS, you could assign raw ranks to the random
number, and Recode ranks 1-100 to your group.
Or recode Casenum 1-100 into a group value.

Or, in SPSS, you could (I think) ask for an exact
proportion to be included in a random sample.
I don't know what Minitab provides.


--
Rich Ulrich, wpilib@xxxxxxxx
http://www.pitt.edu/~wpilib/index.html
.

Relevant Pages

  • Re: Minitab random numbers
    ... > my employer no less. ... > Minitab but it would be ideal if it could generate a list of 100 random ... Now you have a random sample of 100 in C2. ... (or by clicking on Calc> Random Data> Sample from Columns) ...
    (sci.stat.edu)
  • Re: Minitab random numbers
    ... > Or, in SPSS, you could ask for an exact ... > proportion to be included in a random sample. ... The SAMPLE command in Minitab can be used both to sample ...
    (sci.stat.edu)