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This article (PDF) makes the claims that 1) variance in intelligence among men is higher, and 2) this is due to the fact that men have one X chromosome (which has a disproportionately large number of genes expressed in the brain) and women have two, which get "averaged" during genetic cross-over.
I can believe 1), but I'm having trouble accepting 2). If every man gets his X chromosome from his mother, then would the variance in intelligence among men be the same as that of women? 65.92.7.202 ( talk) 01:16, 8 December 2012 (UTC)
It looked simple enough on this page, but I found out that the matrixes are not normal ones. Can someone explain to me (a person with no knowledge of how a Hamming code works) help me to understand how to do that page's example out by hand? -- Melab±1 ☎ 07:28, 8 December 2012 (UTC)
HI, I'M LOOKING FOR MATH FORMULAS CONCERNING RECIPROCATING PUMP CAPACITY (FOR U.S. COAST GUARD MERCHANT MARINE UPGRADE TEST). A SIMPLEX SINGLE/DOUBLE ACTING RECIPROCATING PUMP MAKING 180 STROKES/MINUTE, WITH A 5" DIAMETER CYLINDER, AN 8" STROKE AND OPERATING WITH 87% VOLUMETRIC EFFICIENCY, WHAT IS THE CAPACITY OF THE PUMP? ESB — Preceding unsigned comment added by Edgarbarrios ( talk • contribs) 15:43, 8 December 2012 (UTC)
V = hπr2
V = (2/3)(3.14)(5/24)2
180(0.87)(2/3)(3.14)(5/24)2
Mathematics desk | ||
---|---|---|
< December 7 | << Nov | December | Jan >> | December 9 > |
Welcome to the Wikipedia Mathematics Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
This article (PDF) makes the claims that 1) variance in intelligence among men is higher, and 2) this is due to the fact that men have one X chromosome (which has a disproportionately large number of genes expressed in the brain) and women have two, which get "averaged" during genetic cross-over.
I can believe 1), but I'm having trouble accepting 2). If every man gets his X chromosome from his mother, then would the variance in intelligence among men be the same as that of women? 65.92.7.202 ( talk) 01:16, 8 December 2012 (UTC)
It looked simple enough on this page, but I found out that the matrixes are not normal ones. Can someone explain to me (a person with no knowledge of how a Hamming code works) help me to understand how to do that page's example out by hand? -- Melab±1 ☎ 07:28, 8 December 2012 (UTC)
HI, I'M LOOKING FOR MATH FORMULAS CONCERNING RECIPROCATING PUMP CAPACITY (FOR U.S. COAST GUARD MERCHANT MARINE UPGRADE TEST). A SIMPLEX SINGLE/DOUBLE ACTING RECIPROCATING PUMP MAKING 180 STROKES/MINUTE, WITH A 5" DIAMETER CYLINDER, AN 8" STROKE AND OPERATING WITH 87% VOLUMETRIC EFFICIENCY, WHAT IS THE CAPACITY OF THE PUMP? ESB — Preceding unsigned comment added by Edgarbarrios ( talk • contribs) 15:43, 8 December 2012 (UTC)
V = hπr2
V = (2/3)(3.14)(5/24)2
180(0.87)(2/3)(3.14)(5/24)2