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View Full Version : How exactly does qpAdm work things out with f4 stats?



Bas
02-04-2018, 10:06 PM
In a typical qpAdm output with these pops:


left pops:
Steppe_EMBA
EHG
Iran_ChL

right pops:
Mota
Ust_Ishim
Kostenki14
GoyetQ116-1
Vestonice16
MA1
AfontovaGora3
ElMiron
Villabruna
CHG
WHG
Iran_N
Natufian
Levant_N
Barcin_N
...
## dscore:: f_4(Base, Fit, Rbase, right2)
## genstat:: f_4(Base, Fit, right1, right2)

## dscore:: f_4(Base, Fit, Rbase, right2)
## genstat:: f_4(Base, Fit, right1, right2)

details: EHG Ust_Ishim 0.000309 2.015210
details: Iran_ChL Ust_Ishim -0.000407 -3.389695
dscore: Ust_Ishim f4: -0.000018 Z: -0.163125

At the end of the run there are these f4 stats. What is the bolded f4 stat measuring? Is it which pop out of a left source pop(EHG) and a right pop (Ust-Ishim) is closer to Steppe_EMBA?

And what about the red highlighted stat. What is this measuring?