<?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' xmlns:gd="http://schemas.google.com/g/2005"><id>tag:blogger.com,1999:blog-7958828565254404797.post9141360271592290028..comments</id><updated>2024-12-13T03:11:35.450-08:00</updated><title type='text'>Comments on ListenData: Chi-Square : Variable Reduction Technique</title><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='https://www.listendata.com/feeds/comments/default'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html'/><link rel="hub" href="http://pubsubhubbub.appspot.com/"/><author><name>Deepanshu Bhalla</name><uri>http://www.blogger.com/profile/09802839558125192674</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXm_iOrXFR9Ls-mjtOci4qd1m1V1TXkkWJINuMy84-Axo5pNS6CG7oKwR7hfHHI3tB1yuz8W_qo9HK2Cw5fHfe_4cL_2DCf_LyoK9LMLicZojbNYgypIP-RXNsw1GsVhk/s100/pic.jpg'/></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>8</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-227059808212320046</id><published>2018-06-02T20:59:09.014-07:00</published><updated>2018-06-02T20:59:09.014-07:00</updated><title type='text'>Hi Sir, do you have another chapter which deals wi...</title><content type='html'>Hi Sir, do you have another chapter which deals with feature selection of categorical variable using chi square test in R?&lt;br /&gt;</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/227059808212320046'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/227059808212320046'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1527998349014#c227059808212320046' title=''/><author><name>Ayush</name><uri>https://www.blogger.com/profile/07656102737219402631</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEif0RyamVxb4z1a_yDGQRvPfs8NJB-7Ll_ZYusmb9jylB9Rh_sKSM8wi10u8kQjAgTmiAXNT3Q1NqOpQOMBR3FaTDSU6yuwRVyUS6qGUbfCZKIiVtE2CeE8Qx3vE_LU2_A/s113/Me2fin.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-801471048"/><gd:extendedProperty name="blogger.displayTime" value="June 2, 2018 at 8:59 PM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-8177959051091055360</id><published>2015-05-14T09:04:29.053-07:00</published><updated>2015-05-14T09:04:29.053-07:00</updated><title type='text'>Ok. Changd now. Thanks for that. I guess the same ...</title><content type='html'>Ok. Changd now. Thanks for that. I guess the same process goes for categorical variables using proc freq?</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/8177959051091055360'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/8177959051091055360'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431619469053#c8177959051091055360' title=''/><link rel='related' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/7445352909497556710'/><author><name>izyk nieti</name><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='https://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-6939909"/><gd:extendedProperty name="blogger.displayTime" value="May 14, 2015 at 9:04 AM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-2527118837432848004</id><published>2015-05-14T08:15:42.266-07:00</published><updated>2015-05-14T08:15:42.266-07:00</updated><title type='text'>I would request you to post your question as an id...</title><content type='html'>I would request you to post your question as an identified user. I don&amp;#39;t want to encourage readers post comments as &amp;quot;Anonymous&amp;quot;. Thanks!</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/2527118837432848004'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/2527118837432848004'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431616542266#c2527118837432848004' title=''/><link rel='related' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/7445352909497556710'/><author><name>Deepanshu Bhalla</name><uri>https://www.blogger.com/profile/09802839558125192674</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXm_iOrXFR9Ls-mjtOci4qd1m1V1TXkkWJINuMy84-Axo5pNS6CG7oKwR7hfHHI3tB1yuz8W_qo9HK2Cw5fHfe_4cL_2DCf_LyoK9LMLicZojbNYgypIP-RXNsw1GsVhk/s100/pic.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-966036103"/><gd:extendedProperty name="blogger.displayTime" value="May 14, 2015 at 8:15 AM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-7450248059924130037</id><published>2015-05-14T08:12:03.700-07:00</published><updated>2015-05-14T08:12:03.700-07:00</updated><title type='text'>Step 1 : Run logistic regression on each of the in...</title><content type='html'>Step 1 : Run logistic regression on each of the independent variable and selecting all the variables having p-value less than 0.25. For example, you have 10 independent variables, so run UNIVARIATE logistic regression 10 times for each of the variable and recording their p-values.&lt;br /&gt;&lt;br /&gt;Step 2 : Run multivariate logistic regression on all the variables selecting at step 1 and now set p-value 0.05.</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/7450248059924130037'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/7450248059924130037'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431616323700#c7450248059924130037' title=''/><link rel='related' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/8367495498915822460'/><author><name>Deepanshu Bhalla</name><uri>https://www.blogger.com/profile/09802839558125192674</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXm_iOrXFR9Ls-mjtOci4qd1m1V1TXkkWJINuMy84-Axo5pNS6CG7oKwR7hfHHI3tB1yuz8W_qo9HK2Cw5fHfe_4cL_2DCf_LyoK9LMLicZojbNYgypIP-RXNsw1GsVhk/s100/pic.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-966036103"/><gd:extendedProperty name="blogger.displayTime" value="May 14, 2015 at 8:12 AM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-7445352909497556710</id><published>2015-05-14T06:58:29.952-07:00</published><updated>2015-05-14T06:58:29.952-07:00</updated><title type='text'>Pls i posted questions under the following topics:...</title><content type='html'>Pls i posted questions under the following topics: model validation, scoring in logistic, bootstrapping. &lt;br /&gt;&lt;br /&gt;tnx</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/7445352909497556710'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/7445352909497556710'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431611909952#c7445352909497556710' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='https://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-6939909"/><gd:extendedProperty name="blogger.displayTime" value="May 14, 2015 at 6:58 AM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-8367495498915822460</id><published>2015-05-14T06:21:13.640-07:00</published><updated>2015-05-14T06:21:13.640-07:00</updated><title type='text'>ok u mean running the logistic regression with no ...</title><content type='html'>ok u mean running the logistic regression with no selection options and viewing p-values of each variable before seeting p-value...but not more than 0.25?</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/8367495498915822460'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/8367495498915822460'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431609673640#c8367495498915822460' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='https://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-6939909"/><gd:extendedProperty name="blogger.displayTime" value="May 14, 2015 at 6:21 AM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-4081296211451771394</id><published>2015-05-14T05:02:04.499-07:00</published><updated>2015-05-14T05:02:04.499-07:00</updated><title type='text'>Use of conservative sig level (0.05) often leads t...</title><content type='html'>Use of conservative sig level (0.05) often leads to important variables excluded from analysis. It is recommended to use higher level based on the work by Mickey and Greenland (1989) on logistic regression. It is important to CHECK the IMPORTANCE of these variables in multivariable model stage before deciding your final variables.</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/4081296211451771394'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/4081296211451771394'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431604924499#c4081296211451771394' title=''/><author><name>Deepanshu Bhalla</name><uri>https://www.blogger.com/profile/09802839558125192674</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='//blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXm_iOrXFR9Ls-mjtOci4qd1m1V1TXkkWJINuMy84-Axo5pNS6CG7oKwR7hfHHI3tB1yuz8W_qo9HK2Cw5fHfe_4cL_2DCf_LyoK9LMLicZojbNYgypIP-RXNsw1GsVhk/s100/pic.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-966036103"/><gd:extendedProperty name="blogger.displayTime" value="May 14, 2015 at 5:02 AM"/></entry><entry><id>tag:blogger.com,1999:blog-7958828565254404797.post-977207121238112346</id><published>2015-05-13T16:34:44.287-07:00</published><updated>2015-05-13T16:34:44.287-07:00</updated><title type='text'>Why 0.25 and not 0.05?</title><content type='html'>Why 0.25 and not 0.05?</content><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/977207121238112346'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/7958828565254404797/9141360271592290028/comments/default/977207121238112346'/><link rel='alternate' type='text/html' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html?showComment=1431560084287#c977207121238112346' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='https://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='https://www.listendata.com/2015/05/chi-square-variable-reduction-technique.html' ref='tag:blogger.com,1999:blog-7958828565254404797.post-9141360271592290028' source='http://www.blogger.com/feeds/7958828565254404797/posts/default/9141360271592290028' type='text/html'/><gd:extendedProperty name="blogger.itemClass" value="pid-6939909"/><gd:extendedProperty name="blogger.displayTime" value="May 13, 2015 at 4:34 PM"/></entry></feed>