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A. To make the experiment more complicated. B. To ensure the results are reliable. C. To reduce the time needed for the experiment. D. To increase the number of possible outcomes. 相关知识点: 试题来源: 解析 B。控制变量的主要目的是确保实验结果可靠。A 选项使实验更复杂不是控制变量的目的;...
A. The results may not be representative. B. It is more difficult to detect significant differences. C. The experiment may be less reliable. D. All of the above. 相关知识点: 试题来源: 解析 D。解析:样本量小可能导致结果不具代表性,难以检测到显著差异,实验的可靠性也会降低。反馈...
What makes AS marking reliable? An experiment with some stages from the standardisation process 来自 Taylor & Francis 喜欢 0 阅读量: 13 作者:Jackie Greatorex,John F. Bell 摘要: It is particularly important that GCSE and A‐level marking is valid and reliable as it affects the life chances ...
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What is an experimental procedure? In an experiment, what is the factor that is tested? What is a randomized comparative experiment? What is the difference between control and variable in an experiment? What makes an experiment reliable?
For these tests,degrees of freedomare used to determine if a certainnull hypothesiscan be rejected based on the total number of variables and samples within the experiment. As with any statistic, the larger the sample size, the more reliable the results. ...
It is particularly important that GCSE and A‐level marking is valid and reliable as it affects the life chances of many young people in England. Current developments in marking technology are coinciding with potential changes in procedures to ensure valid and reliable marking. In this research ...
During software development, a key part of the process is to regularly test the software to make sure it performs as designed and is reliable. Running applications continuously for a period is one test. Another is to send many inquiries to the software to see how it reacts. ...