一灯大师说的是不是这个?BTW,论CS,女生不服男生不行呀。也许别的方面,女生比男生强

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Fig. 1.

Fig. 1.

CS skills across China, India, Russia, and the United States. Mean estimates for China, India, and Russia are each statistically lower than the mean estimate for the United States (P = 0.000). Mean estimates are not statistically different between China and India (P = 0.435), China and Russia (0.914), and India and Russia (P = 0.509). Estimates are reported as effect sizes (in SD units). Scaled CS examination scores were converted into z-scores using the mean and SD of the entire cross-national sample of examination takers. As such, the overall mean of the standardized score across all four countries is zero. SEs are adjusted for clustering at the institution (university/college) level.

Fig. 2.

Fig. 2.

CS skills by elite and nonelite institutions: China, India, Russia, and the United States. Within each country, the mean estimate for elite institutions is higher than the mean estimate for nonelite institutions (China, P = 0.063; India, P = 0.174; Russia, P = 0.084; United States, P = 0.000). The mean estimate for elite institutions in China, India, and Russia combined is lower than the mean estimate for elite (ACT/SAT equivalent >1,250; approximately the top quintile) institutions in the United States (P = 0.008). Mean estimates for nonelite institutions in China, India, and Russia are each lower than mean estimate for nonelite institutions in the United States (P = 0.000). Mean estimates for elite institutions across China, India, and Russia are not statistically different (P > 0.100). Mean estimates for nonelite institutions across China, India, and Russia are also not statistically different (P > 0.100). Estimates reported as effect sizes (in SD units). Scaled CS examination scores converted into z-scores using the mean and SD of the entire cross-national sample of examination takers. As such, the overall mean of the standardized score across all four countries is zero. SEs adjusted for clustering at the institution (university/college) level.

 

Fig. 3.

Fig. 4.

Fig. 4.

CS skills by gender: China, India, Russia, and the United States. Within each country, males score significantly higher than females (China, P = 0.093; India, P = 0.077; Russia, P = 0.022; USA, P = 0.000). Estimates reported as effect sizes (in SD units). Scaled CS examination scores converted into z-scores using the mean and SD of the entire cross-national sample of examination takers. As such, the overall mean of the standardized score across all four countries is zero. SEs adjusted for clustering at the institution (university/college) level.

 

https://www.pnas.org/content/early/2019/03/12/1814646116

 



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佩服佩服,我就是在收音机里听了一句,您真找到了。 -千里一盏灯- 给 千里一盏灯 发送悄悄话 千里一盏灯 的博客首页 千里一盏灯 的个人群组 (0 bytes) () 03/19/2019 postreply 13:24:12

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平均吧,记得中学大学电脑比赛美国和俄国比还是有一定距离。 -BeLe- 给 BeLe 发送悄悄话 BeLe 的博客首页 BeLe 的个人群组 (0 bytes) () 03/19/2019 postreply 13:30:23

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