What does marginalising out means?

by Bakhtawar   Last Updated January 21, 2018 00:19 AM

I am reading an article and it says the following and I quote:

"In particular, if we define SNP-heritability h as the proportion of variance explained by the SNPs included in the model after marginalizing out B, then it is simple to show that:"enter image description here

Could someone tell me what does marginalising out means in this context? I'm sorry if this question seems basic. I don't have statistical background and can't really understand what this means. I would appreciate if someone could help me this regard.

Tags : probability


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