Question

identify the control group in an experiment and explain why it is important in a valid experiment.

1. a ____________ in an experiment is the group which is not subject to the independent variable you are testing.
2. in an experiment, why do you need a control group? ______________________________

______ would have on the growth of young

Explanation:

For question 7: A control group in an experiment is the group not exposed to the independent variable. This matches the definition given (group not subject to the independent variable being tested). So the term is "control group".

For question 8: A control group is needed to provide a baseline for comparison. It helps determine if the independent variable (the factor being tested) actually causes a change in the dependent variable (the outcome being measured). Without a control group, it's hard to tell if any observed changes are due to the variable being tested or other confounding factors (like natural changes, external influences, etc.). It allows for isolating the effect of the independent variable by having a group with all other conditions the same but without the independent variable's manipulation.

Answer:

1. control group
2. A control group provides a baseline to compare with the experimental group (the group exposed to the independent variable). It helps determine if the independent variable causes a change in the dependent variable by isolating its effect (eliminating confounding factors, showing if changes are due to the variable tested rather than other influences).