Comments for The Chemical Statistician

In reply to Jack. I'm sor...

https://chemicalstatistician.wordpress.com/2018/04/27/convert-multiple-variables-between-character-and-numeric-formats-in-sas/comment-page-1/#comment-12636

Hi! When I tried to convert my character variables to numeric variables in bulk, I noticed that their values disappeared (e.g. I ended up with converted variables but an empty data set). Is there...

https://chemicalstatistician.wordpress.com/2018/04/27/convert-multiple-variables-between-character-and-numeric-formats-in-sas/comment-page-1/#comment-12634

In reply to Emily V....

https://chemicalstatistician.wordpress.com/2017/04/15/getting-the-name-type-format-length-and-label-of-variables-in-a-sas-data-set/comment-page-1/#comment-11241

This has worked for me in the past, but today I'm getting the following error: "ERROR: The following columns were not found in the contributing tables: format, label, length, name, type."

https://chemicalstatistician.wordpress.com/2017/04/15/getting-the-name-type-format-length-and-label-of-variables-in-a-sas-data-set/comment-page-1/#comment-11238

In reply to Eric Cai - The Che...

https://chemicalstatistician.wordpress.com/2018/04/27/convert-multiple-variables-between-character-and-numeric-formats-in-sas/comment-page-1/#comment-9667

In reply to Lauren McClain...

https://chemicalstatistician.wordpress.com/2018/04/27/convert-multiple-variables-between-character-and-numeric-formats-in-sas/comment-page-1/#comment-9666

This is a great tutorial but what I can't figure out is that if I have a few variables that are character that I want to keep character, how do I modify this in that case? I have a lot of variabl...

https://chemicalstatistician.wordpress.com/2018/04/27/convert-multiple-variables-between-character-and-numeric-formats-in-sas/comment-page-1/#comment-9664

In reply to https://chemicalstatistician.wordpress.com/2013/07/29/exploratory-data-analysis-combining-histograms-and-density-plots-to-examine-the-distribution-of-the-ozone-pollution-data-from-new-york-in-r/comment-page-1/#comment-9409

Thank you for the informative post. I do have a question regarding your choice to try to see if normal distribution fits your data. It seems like all the observations for the variable are positiv...

https://chemicalstatistician.wordpress.com/2013/07/29/exploratory-data-analysis-combining-histograms-and-density-plots-to-examine-the-distribution-of-the-ozone-pollution-data-from-new-york-in-r/comment-page-1/#comment-9387

In reply to Wasim. The video is...

https://chemicalstatistician.wordpress.com/2014/01/27/video-tutorial-breaking-down-the-definition-of-the-hazard-function/comment-page-1/#comment-9191

I am not getting any video of normal distrbution derivation in survival analysis

https://chemicalstatistician.wordpress.com/2014/01/27/video-tutorial-breaking-down-the-definition-of-the-hazard-function/comment-page-1/#comment-9187

In reply to Martin. ...

https://chemicalstatistician.wordpress.com/2015/02/03/how-to-get-the-frequency-table-of-a-categorical-variable-as-a-data-frame-in-r/comment-page-1/#comment-9051

Is there a way to count values based on a vector with item levels? I'm thinking about a syntax such as count(mtcars,'gear',c(0,3,4)) which should count the values of gear 0 (of which there is non...

https://chemicalstatistician.wordpress.com/2015/02/03/how-to-get-the-frequency-table-of-a-categorical-variable-as-a-data-frame-in-r/comment-page-1/#comment-9022

In reply to https://chemicalstatistician.wordpress.com/2014/01/27/physical-chemistry-lesson-of-the-day-the-effect-of-temperature-on-changes-in-internal-energy-and-enthalpy/comment-page-1/#comment-8929

Internal energy is depend on temperature but internal energy is extensive property and temperature is intensive property why?

https://chemicalstatistician.wordpress.com/2014/01/27/physical-chemistry-lesson-of-the-day-the-effect-of-temperature-on-changes-in-internal-energy-and-enthalpy/comment-page-1/#comment-8921

In reply to Anslem Manoka. Hi Ansl...

https://chemicalstatistician.wordpress.com/2014/03/19/machine-learning-lesson-of-the-day-overfitting-and-underfitting/comment-page-1/#comment-8684

How can we determine the degree of a polynomial regression? How can I know that a certain degree is the best fit?

https://chemicalstatistician.wordpress.com/2014/03/19/machine-learning-lesson-of-the-day-overfitting-and-underfitting/comment-page-1/#comment-8683

In reply to https://chemicalstatistician.wordpress.com/2018/03/04/a-sas-macro-to-label-variables-in-one-data-set-using-a-character-variable-from-another-data-set/comment-page-1/#comment-8661

In reply to dlidstrom<...

https://chemicalstatistician.wordpress.com/2014/06/25/mathematics-and-applied-statistics-lesson-of-the-day-the-weighted-harmonic-mean/comment-page-1/#comment-8660

Thanks for writing this blog. It is very much informative and at the same time useful for me

https://chemicalstatistician.wordpress.com/2015/04/10/separating-unique-and-duplicate-variables-using-proc-sort-in-sas-9-3-and-newer-versions/comment-page-1/#comment-8653