A. It slows down evolution. B. It has no effect on evolution. C. It provides the raw material for evolution. D. It makes E. volution more predictable. 相关知识点: 试题来源: 解析 C。解析:变异在进化中提供了原材料。变异产生了不同的性状,为自然选择提供了选择的对象。A 选项变异不会减慢进...
百度试题 结果1 题目35 What is an example of continuous variation?C A blood group B gender C height D tongue rolling 相关知识点: 试题来源: 解析 C 反馈 收藏
Area charts.This visualization method is a variation of a line chart. It displays multiple values in a time series -- or a sequence of data collected at consecutive, equally spaced points in time. Treemaps.This method shows hierarchical data in a nested format. The size of the rectangles u...
A leverage ratio is a type of financial measurement used in finance, business, and economics to evaluate the level of debt relative to another financial metric. It can be used to measure how muchcapitalcomes in the form of debt (loans) or assess the ability of a company to meet its finan...
Increased buy and hold is a variation of the straightforward buy and hold strategy, and it involves additional risk. The premise behind this approach is that an investor will continue to add to their holdings in a particular security so long as that security continues to increase in price. ...
百度试题 题目What is the coefficient of variation for a distribution with a mean of 10 and a variance of 4? A. 20%. B. 40%. C. 25%. 相关知识点: 试题来源: 解析 A 略 反馈 收藏
正确答案:A 分享到: 答案解析: Coefficient of variation, CV = standard deviation / mean. The standard deviation is the square root of the variance, or 4½ = 2. So, CV = 2 / 10 = 20%. 统计:共计66人答过,平均正确率62.12% 问题:进入高顿部落发帖帮助相似...
Variance is a statistical measure of dispersion, whereas variation refers to the range of differences in a set of variables.
aA small variation of this practice is the base of the proposed approach for the reading aid development. The idea is to point the word you want to read and listen to a synthetic voice that reproduces that word. The pointer can be shaped like a pencil. In this way, you can easily ...
A budget is an estimation of certain variables. It is a tool most frequently employed in finance to forecast probable results of certain business activity. The deviations between a budget and the actual results obtained have to be recognized and dealt with in order to evaluate the business’ res...