The primary means that scientists use to establish control in their observations is to
A)train multiple observers.
B)manipulate an independent variable in an experiment.
C)establish the accuracy and precision of their measurements.
D)observe many dependent variables.

Question

Quizplus · Accepted Answer

Manipulating an independent variable in an experiment allows scientists to establish control over their observations by comparing the results of the experimental group (where the independent variable is manipulated) to the control group (where the independent variable is not manipulated). This helps ensure that any observed differences in the dependent variable are due to the manipulation of the independent variable, rather than other factors. Training multiple observers, establishing measurement accuracy and precision, and observing many dependent variables can also help ensure scientific rigor, but they do not necessarily establish control over the observations in the same way that manipulating an independent variable does.

The Primary Means That Scientists Use to Establish Control in Their