predetermined variable

简明释义

先定变量

英英释义

例句

1.During the simulation, the predetermined variable was fixed to ensure consistency.

在模拟过程中，预先确定的变量被固定以确保一致性。

2.Each participant was assigned a predetermined variable to evaluate their responses.

每位参与者被分配了一个预先确定的变量来评估他们的反应。

3.The results were analyzed based on the predetermined variable established at the beginning of the study.

结果是基于研究开始时建立的预先确定的变量进行分析的。

4.In the experiment, we set a predetermined variable to control the temperature.

在实验中，我们设置了一个预先确定的变量来控制温度。

5.The software allows users to adjust the predetermined variable for better performance.

该软件允许用户调整预先确定的变量以获得更好的性能。

作文

In the realm of scientific research and data analysis, the concept of a predetermined variable plays a crucial role in shaping the outcomes of experiments and studies. A predetermined variable is defined as a factor that is established before the commencement of an experiment or study, which remains constant throughout the research process. This ensures that the results obtained are reliable and can be attributed to the changes made in other variables, rather than fluctuations in the predetermined variable itself.For instance, consider a psychological study aimed at understanding the impact of sleep on cognitive performance. In this scenario, the researchers may decide to keep the age of participants as a predetermined variable. By controlling for age, the researchers can ensure that any differences observed in cognitive performance are not skewed by the varying ages of participants. This allows for a clearer interpretation of the relationship between sleep and cognitive abilities.The importance of predetermined variables extends beyond psychology into various fields such as economics, biology, and engineering. In economics, when analyzing the effects of interest rates on consumer spending, researchers might set income levels as a predetermined variable. This helps to isolate the effect of interest rates, providing a more accurate understanding of how they influence spending behavior.Moreover, the use of predetermined variables is essential for maintaining the integrity of research findings. When researchers fail to identify and control for relevant predetermined variables, they risk introducing bias into their results. For example, if a study investigating the effectiveness of a new drug does not account for the age and health status of participants as predetermined variables, the findings may not be applicable to the broader population.In addition to enhancing the reliability of research, predetermined variables also aid in the replication of studies. Replicability is a cornerstone of scientific inquiry, allowing other researchers to verify findings and build upon previous work. By clearly defining and maintaining predetermined variables, scientists create a framework that can be followed in future studies, ensuring that others can replicate the conditions under which the original research was conducted.Furthermore, the identification of predetermined variables can also guide researchers in their experimental design. Knowing which factors need to be controlled allows for more efficient use of resources and time. For example, if a researcher knows that gender is a significant predetermined variable in their study, they can ensure balanced representation of genders in their sample, thereby reducing variability and increasing the robustness of their findings.In conclusion, the concept of predetermined variables is fundamental to the scientific method. By establishing these variables ahead of time, researchers can enhance the reliability, validity, and replicability of their studies. Whether in psychology, economics, or any other field, understanding and effectively managing predetermined variables is essential for producing credible and meaningful research outcomes. As we continue to advance in our understanding of complex systems, the role of predetermined variables will remain a pivotal element in ensuring the integrity of scientific investigation.

在科学研究和数据分析的领域中，预先确定变量的概念在塑造实验和研究结果方面发挥着至关重要的作用。预先确定变量被定义为在实验或研究开始之前建立的一个因素，在整个研究过程中保持不变。这确保了获得的结果是可靠的，并且可以归因于其他变量的变化，而不是预先确定变量本身的波动。例如，考虑一个旨在理解睡眠对认知表现影响的心理学研究。在这种情况下，研究人员可能决定将参与者的年龄作为预先确定变量。通过控制年龄，研究人员可以确保观察到的认知表现差异不会因参与者的不同年龄而偏倚。这使得对睡眠与认知能力之间关系的解释更加清晰。预先确定变量的重要性不仅限于心理学，还扩展到经济学、生物学和工程等多个领域。在经济学中，当分析利率对消费者支出的影响时，研究人员可能会将收入水平设定为预先确定变量。这有助于孤立利率的影响，从而提供对它们如何影响消费行为的更准确理解。此外，使用预先确定变量对于维护研究发现的完整性至关重要。当研究人员未能识别和控制相关的预先确定变量时，他们就有可能在结果中引入偏见。例如，如果一项研究调查新药的有效性，但没有将参与者的年龄和健康状况作为预先确定变量进行考虑，那么这些发现可能不适用于更广泛的人群。除了增强研究的可靠性外，预先确定变量还帮助研究人员进行研究的复制。可复制性是科学探究的基石，使其他研究人员能够验证发现并在先前的工作基础上进行构建。通过明确定义和维持预先确定变量，科学家们创建了一个框架，其他人可以在未来的研究中遵循，从而确保他们能够复制原始研究进行的条件。此外，识别预先确定变量还可以指导研究人员进行实验设计。知道哪些因素需要被控制，可以更有效地利用资源和时间。例如，如果研究人员知道性别是他们研究中的一个重要预先确定变量，他们可以确保样本中性别的平衡代表，从而减少变异性并提高研究结果的稳健性。总之，预先确定变量的概念是科学方法的基础。通过提前建立这些变量，研究人员可以增强他们研究的可靠性、有效性和可复制性。无论是在心理学、经济学还是其他任何领域，理解和有效管理预先确定变量对于产生可信和有意义的研究结果至关重要。随着我们继续加深对复杂系统的理解，预先确定变量的作用将仍然是确保科学调查完整性的关键要素。