R help - Jul 2019 - Sample size required to estimate population variance

Colleagues,
Can anyone suggest a package or code which might help me calculate the minimum
sample size required to estimate the population variance? I can do this in
Minitab but I'd rather do this in R.
Thomas Subia
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Does this help?
https://www.r-bloggers.com/computing-sample-size-for-variance-estimation/

On Wed, 3 Jul 2019 at 10:23, Thomas Subia via R-help <r-help at
r-project.org>
wrote:
> Colleagues,
> Can anyone suggest a package or code which might help me calculate the
> minimum sample size required to estimate the population variance? I can do
> this in Minitab but I'd rather do this in R.
> Thomas Subia
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> and provide commented, minimal, self-contained, reproducible code.
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On Tue, 2 Jul 2019 22:23:18 +0000 (UTC)
Thomas Subia via R-help <r-help at r-project.org> wrote:
> Colleagues,
> Can anyone suggest a package or code which might help me calculate
> the minimum sample size required to estimate the population variance?
> I can do this in Minitab but I'd rather do this in R. Thomas Subia
You want to look into the capabilities of the pwr package.  This page
offers some information:

https://www.statmethods.net/stats/power.html

JWDougherty

Thanks for the suggestion but I'm not sure that it answers my original
question.I need to know how many samples I need to collect to collect in order
to estimate the sample size needed to achieve a specific margin of error for
confidence intervals for the population variance. I'm not sure whether the
pwr package does that.


    On Thursday, July 4, 2019, 4:31:44 PM PDT, John <jwd at surewest.net>
wrote:
 
 On Tue, 2 Jul 2019 22:23:18 +0000 (UTC)
Thomas Subia via R-help <r-help at r-project.org> wrote:
> Colleagues,
> Can anyone suggest a package or code which might help me calculate
> the minimum sample size required to estimate the population variance?
> I can do this in Minitab but I'd rather do this in R. Thomas Subia
You want to look into the capabilities of the pwr package.? This page
offers some information:

https://www.statmethods.net/stats/power.html

JWDougherty
  
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