The beauty of the experimental design is that it effectively rules out confounding variables; acoustic isolation assures that the female can respond only to the song structure itself.

实验设计的美妙之处在于它有效地排除了混淆变量；声学隔离确保了雌性只能对鸣声结构本身做出反应。

youdao

Analyses were adjusted for confounding variables using logistic regression.

使用逻辑回归调整了混杂变量分析。

youdao

The study sounds simple, but the design of the experiments was actually somewhat complex, because the researchers had to overcome a number of confounding variables.

这个实验听起来很简单，但是实验的设计确实有一定程度的复杂性，因为研究人员不得不克服一些混淆变量。

youdao

Dr Wilson and Dr Storm restricted their study to white, Protestant teenagers, in order to eliminate confounding variables.

ECONOMIST: Human evolution

This was despite nearly identical power outputs in all four tests and efforts to control for possible confounding variables, such as the time of day.

ECONOMIST: Exercise and company

By a useful (though hardly unexpected) coincidence, all the businessmen were male and all were white, so there were no confounding variables of race or sex.

ECONOMIST: Physiognomy and success: Face value | The