User: wenqianglongli

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Posts by wenqianglongli

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Comment: C: Do we have to use a covariance (at quantitative scale) that is a normal distribu
... Hi Kevin, That answer is very useful!! Thanks for sharing and for your help. ...
written 4 weeks ago by wenqianglongli10
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Comment: C: Do we have to use a covariance (at quantitative scale) that is a normal distribu
... Hi Kevin, Thanks for your reply! Yes, I do get your points that wont be a perfect normal distribution in real data especially in some cases of diseases. Not only the histograms look fine to me, but also the qq plots look good as well. I tried shapiro test first, and the results are: 1) data: d$Q ...
written 4 weeks ago by wenqianglongli10
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Comment: C: Do we have to use a covariance (at quantitative scale) that is a normal distribu
... Hi Kevin, Many thanks for your reply. Yes, I did try them. However, Iike I said, even some of the histograms look fine, the normality tests still suggest that there are not normally distributed. Please find the histograms of the data following the link below. https://www.dropbox.com/s/usz23ftwkkw ...
written 4 weeks ago by wenqianglongli10
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Do we have to use a covariance (at quantitative scale) that is a normal distribution in linear regression when running a GWAS
... Hi all, Hope this finds you well. I am adding a covariance which is a quantitative variable (~600 samples) in my linear regression when I run a GWAS. The data turn out not normally distributed and I have tried many different ways to normalize it and outliers have been removed as well. Although the ...
gwas linear regression written 4 weeks ago by wenqianglongli10

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