When choosing a control group in an experiment, it should be as similar as possible to the experimental group to ensure ___. A. comparability B. diversity C. uniqueness D. contrast 相关知识点: 试题来源: 解析 A。选择对照组时应与实验组尽可能相似以确保可比性。选项 B“diversity”多样性,与...
What is a positive and negative control in an experiment? Experiment: An experiment is a test performed to observe the outcome of a predicted hypothesis. Valid and repeated experimental results can provide evidence to support or reject a hypothesis. ...
The factor in an experiment that researchers manipulate so that they can determine its effect is called? What is the purpose of experimental control? During an experiment, what is the purpose of a control group? What is the name of an experiment in which an...
The purpose of variable control in an experiment is to ___. A. add more variables B. reduce the number of steps C. make sure the results are reliable D. change the outcome 相关知识点: 试题来源: 解析 C。变量控制的目的是确保结果可靠。选项 A 增加更多变量错误;选项 B 减少步骤数不对;...
aSimilarly, firms should be aware of their own status, of when and where they should take necessary actions in response to their financial problems, as soon as possible rather than when the problems are beyond their control and reach a crisis. 同样,企业应该知道他们自己的状态的何时何地他们应该...
解析 A。解析:在实验中,由科学家改变的变量被称为自变量。选项 B“dependent variable”是因变量,是随着自变量的变化而变化的变量。选项 C“control variable”是控制变量,保持不变以确保实验的准确性。选项 D“constant variable”是常量变量,也是保持不变的变量。
In any experiment, scientists use two variables an independent variable which is the variable they are changing and the dependent variable, which is what they will measure in the experiment. But, scientists also need to include a control to make sure the results of their experiment are valid....
What is a control setup and how is it different from a fair experiment? In a controlled experiment, which group experiences the test? What is the purpose of an experiment? What is a single blind experiment? What is the most difficult part of a controlled experiment?
In the experiment, you should ___ the variables carefully. A. control B. manage C. regulate D. handle 相关知识点: 试题来源: 解析 C。regulate 有调节、控制之意,在实验中需要小心控制变量。control 比较强硬;manage 是管理;handle 是处理。反馈 ...
In an experiment (实验), scientists divided 100 people into two groups. People in the first group were asked to ride a bike slowly for 60 minutes. People in the second group only had to do it really fast for 6 minutes. It shows that the short but intense (剧烈的) exercise made the ...