D. 14相关知识点: 试题来源: 解析 C The average of 7, 7, 7, 7, 7, 7, and 21, is (42+21)÷7=63÷7=9. 7,7,7,7,7,7和21的平均数是( ). A.7 B.8 C.9 D. 14 平均数是(42+21)÷7=63÷7=9. 故选C.反馈 收藏
Objectives: To assess the sex and age differences in the three-dimensional facial morphology at rest and the peak of posed smile, using the average faces of Japanese young males, young females and middle-aged females. Method: Three types of groups of Japanese subjects having the straight-type ...
allowing for greater interaction and hence comparison with men of different ethnic backgrounds. It is also interesting to note that the vast majority of Black subjects stated that they tended to be well endowed; an opinion which was not borne out by the results of this study but has been...
Our research shows the average business spends $40,000 in their first year. Here’s a breakdown of those costs so you can plan your own expenses.
Attractiveness is a proposed universal cue to overall biological quality. Nonetheless, local raters and raters of the same ethnicity may be more accurate in assessing the cues for attractiveness than distant and unfamiliar raters. Shared ethnicity and sh
19. (tr) slang chiefly US to cheat or defraud: he beat his brother out of the inheritance. 20. beat about the bush to avoid the point at issue; prevaricate 21. beat a retreat to withdraw or depart in haste 22. beat it slang (often imperative) to go away 23. beat one's breast...
Interesting! looks likemath.fsum(l) / len(l)is the fastest way, thenstatistics.fmean(l), and only thensum(l) / len(l). Nice! Thank you @Asclepius for showing me these two other ways! OLD ANSWER: In terms of efficiency and speed, these are the results that I got testing the othe...
母牛的发情周期平均为21天。 6. An average of ten students are absent each day .平均每天有十名学生缺席。 7. The rainfall averages 36 inches a year .年降雨量平均为36英寸。 8. I have done some averaging to reach these figures .我平均以后得出这些数。 9. They are reverting toward the ...
The present invention refers to copolymers of factor IX, which have been modified to include a part of biologically bearable polymers. Factor 9 is not polluted by IXA. The ninth factor combination improved pharmacy characteristics, such as an increase in life expectancy, resulting in moderate dos...
After ten years of work, salaries increase by 21%, with an additional 14% increase for those who have worked for over 15 years. These figures should be used as rough estimates, as considering individual job titles can lead to more accurate assessments. ...