The independent, dependent and control variables in the experiments given are :
1.) Group B participant who aren't given the special juice are the control group.
2.) The Independent variables are the juice types given to the participants
3.)The dependent variable is Number of stack of paper made.
4.) since the number of stacks of paper made by group A is less than that made by group B, we conclude that the special group does not increase productivity.
5.) The experiment could be improved by having a group which are not given any type of juice to drink to serve as control.
6.) The initial observation is the presence of green slime on shower.
7.) The control group is portion of the shower being sprayed with water.
8.) The Independent variables are spray and water .
9.)Dependent variable is appearance of the green slime on the shower after treatment.
10.) It can be concluded that the coconut juice treatment is not effective.
11.) The control group is the unexposed group of mouse.
12.) The Independent variable is the exposure level of the mouse
13.) The dependent variable is the ability of mouse to push block.
14.) We cannot expressly conclude that mouse exposed to microwave are stronger as the output values are very close
15.) To improve the experiment, Bart may increase the sample size.
16.) Test subject A, sprayed with the original itching powder is the Control group.
17.) The Independent variables are the types of itching powder.
18.) The dependent variable is the itching time.
19.) Since subject B upon which the experimental itching powder is applied experienced longer itching time of 45 minutes, hence, the data supports the advertisement claim.
20.)
Lisa will require two groups of randomly selected subjects ; each group consisting of the same number of subjects.
- One group, Group A will have the Rogoti treatment applied on their hair, the other group, Group B will have the usual hair treatment applied (CONTROL GROUP).
- The subjects are left for a particular period of time and the growth level or rate of their hair measured.
The Independent variable = hair treatment (Rogoti and the usual hair treatment)
The dependent variable = growth rate
The control group in an experimental study refers to the group of participants who aren't given the treatment.
The Independent variable are variables in an experiment which are manipulated in other to effect changes in the dependent variable.
The dependent variable are variables which are measured in an experiment. They are the variables upon which manipulation of independent variable are being measured.
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