https://phys.org/news/2022-06-friends-people-drawn.html?utm_source=nwletterutm_medium=emailutm_campaign=daily-nwletter Friends at first sniff: People drawn to others who smell like them 闻起来气味相投的人更容容易互相吸引成为好友。 Ralted paper https://www.science.org/doi/10.1126/sciad ...
The standard error of the sample mean is the standard deviation in sample means across samples , i.e. a measure of the variability (or uncertainty) in the sample mean across samples. What is meant by 95% confidence with regard to a 95% confidence interval for the mean ? ...
If the Pearson correlation coefficient (r) between X and Y is 0, does this mean there is no relationship between X and Y ? NOOO!!! A correlation of zero implies that there is no LINEAR relationship between X and Y. It is possible that a strong curvilinear relationship can have a correlation c ...
Phylogenetic classification of the world’s tropical forests http://www.pnas.org/content/early/2018/01/31/1714977115 five principal floristic regions and their floristic relationships were shown: ( i ) Indo-Pacific, ( ii ) Subtropical, ( iii ) African, ( iv ) American, and ( v ) D ...
http://onlinelibrary.wiley.com/wol1/doi/10.1002/ece3.2003/full The plant damage caused by each pest species individually had, as expected, either no, or a negative impact on seed yield and the strongest negative effect was caused by pollen beetles. However, seed yield increased when plant da ...