uncontrolled variable

简明释义

未受控制变量

英英释义

例句

1.In a clinical trial, an uncontrolled variable 不可控变量 such as patient age can affect the results significantly.

在临床试验中，一个不可控变量如患者年龄可能会显著影响结果。

2.In experiments, it's crucial to minimize uncontrolled variables 不可控变量 to ensure valid results.

在实验中，减少不可控变量是确保结果有效的关键。

3.Researchers must account for any uncontrolled variable 不可控变量 that could skew their data.

研究人员必须考虑任何可能扭曲数据的不可控变量。

4.The presence of an uncontrolled variable 不可控变量 can lead to unreliable conclusions in scientific studies.

存在一个不可控变量可能导致科学研究得出不可靠的结论。

5.An uncontrolled variable 不可控变量 like temperature can greatly influence the outcome of chemical reactions.

像温度这样的不可控变量可以极大地影响化学反应的结果。

作文

In the realm of scientific research and experimentation, the concept of an uncontrolled variable is pivotal. An uncontrolled variable refers to any factor that can influence the outcome of an experiment but is not accounted for or controlled by the researcher. This can lead to skewed results and can affect the validity of the experiment. Understanding the implications of uncontrolled variables is essential for anyone involved in scientific inquiry.For instance, consider a simple experiment designed to test the effect of sunlight on plant growth. If a researcher sets up two identical plants in different locations, with one receiving direct sunlight and the other placed in a shaded area, they are attempting to measure the impact of sunlight. However, if the plants are watered differently or if one plant is exposed to pests while the other is not, these factors become uncontrolled variables. They may influence the growth of the plants, thus confounding the results of the experiment.The presence of uncontrolled variables is not limited to natural sciences; it also extends to social sciences. For example, if a psychologist conducts a study on the effects of a new teaching method on student performance, several uncontrolled variables could come into play. These might include the socio-economic background of the students, their prior knowledge, or even the classroom environment. If these factors are not controlled, the findings could be misleading, leading to incorrect conclusions about the effectiveness of the teaching method.To minimize the impact of uncontrolled variables, researchers often employ various strategies. Randomization is one such technique, where participants are randomly assigned to different groups to ensure that each group is similar in all respects except for the treatment being tested. This helps to distribute uncontrolled variables evenly across all groups, reducing their potential impact on the results.Another approach is to use control groups. In experiments, a control group does not receive the treatment being tested, allowing researchers to compare the results against those who do. By having a baseline, researchers can better understand how uncontrolled variables may have affected the experimental group.Moreover, researchers should also conduct thorough literature reviews before starting their experiments. Understanding what has been studied previously can help them identify potential uncontrolled variables that may need to be addressed. This proactive approach can significantly enhance the reliability of the research findings.In conclusion, uncontrolled variables are an inherent part of the research process, and acknowledging their existence is crucial for conducting valid experiments. Whether in the natural sciences or social sciences, recognizing and managing these variables can lead to more accurate and trustworthy results. Researchers must be vigilant in identifying potential uncontrolled variables, employing strategies to mitigate their effects, and continually refining their methodologies to enhance the quality of their work. Ultimately, understanding uncontrolled variables not only improves individual studies but also contributes to the broader scientific community's quest for knowledge and understanding.

在科学研究和实验的领域中，uncontrolled variable（不受控制的变量）的概念至关重要。uncontrolled variable指的是任何可以影响实验结果但未被研究者考虑或控制的因素。这可能导致结果偏差，并影响实验的有效性。理解uncontrolled variable的含义对于任何参与科学探究的人来说都是必不可少的。例如，考虑一个简单的实验，旨在测试阳光对植物生长的影响。如果研究者在不同的位置设置两株相同的植物，其中一株接受直接阳光，而另一株则放在阴凉处，他们试图测量阳光的影响。然而，如果植物的浇水方式不同，或者一株植物暴露于害虫而另一株没有，这些因素就成为了uncontrolled variable。它们可能会影响植物的生长，从而混淆实验结果。uncontrolled variable的存在不仅限于自然科学；它还扩展到社会科学。例如，如果心理学家进行一项关于新教学方法对学生表现影响的研究，可能会出现多种uncontrolled variable。这些因素可能包括学生的社会经济背景、他们的先前知识，甚至课堂环境。如果这些因素没有被控制，研究结果可能会产生误导，导致对教学方法有效性的错误结论。为了最小化uncontrolled variable的影响，研究人员通常采用各种策略。随机化就是一种这样的技术，参与者被随机分配到不同的组，以确保每组在所有方面都相似，除了正在测试的处理。这有助于将uncontrolled variable均匀分布在所有组中，从而减少它们对结果的潜在影响。另一种方法是使用对照组。在实验中，对照组不接受正在测试的处理，使研究人员能够将结果与接受处理的实验组进行比较。通过拥有基准，研究人员可以更好地理解uncontrolled variable可能如何影响实验组。此外，研究人员在开始实验之前还应该进行全面的文献回顾。了解以前研究过的内容可以帮助他们识别可能需要解决的潜在uncontrolled variable。这种主动的方法可以显著提高研究结果的可靠性。总之，uncontrolled variable是研究过程中的固有部分，承认其存在对于进行有效实验至关重要。无论是在自然科学还是社会科学中，识别和管理这些变量可以导致更准确和可靠的结果。研究人员必须警惕地识别潜在的uncontrolled variable，采用策略来减轻其影响，并不断完善他们的方法，以提高工作的质量。最终，理解uncontrolled variable不仅改善了个别研究，也为更广泛的科学共同体追求知识和理解做出了贡献。