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If a research study has an independent variable it must be what?
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What are the independent dependent and control variables?
The independent variable is the thing you are changing/varying. The dependent variable is the thing you are measuring. This variable should be affected by the independent variable. Control variables are anything that must be kept constant. If there are any other factors which affect the dependent variable, then these need to be controlled so that they do not have any significant effect (basically ensuring that you are actually measuring the effects of the independent variable).
What type of variable must be measurable to obtain results?
either independent or dependent
What are some kinds of independent variables?
The answer depends on the context. A variable can be independent in some studies but dependent in others. Time can be an independent variable in distance-time or speed-time studies but the time (to failure of a component) is a dependent variable. Perhaps confusingly, the same two variables can swap places depending upon the context. Suppose I believe that healthier people are taller (their growth is less likely to be stunted by illnesses) then my independent variable is some measure of their health and the dependent variable is their height. If instead, I believe that taller people are healthier (their parents must have had good genes) then the independent variable is height and the dependent is health.
What are Confounding Variables?
In any experiment there are many kinds of variables that will effect the experiment. The independent variable is the manipulation for the experiment and the dependent variable is the measure you take from that experiment. Confounding variables are things in which have an effect on the dependent variable, but were taken into account in the experimental design. For example, you want to know if Drug X has an effect on causing sleep. The experimenter must take care to design the experiment so that he can be very sure that the subjects in the study fell asleep because of the influence of his Drug X, and that the sleepiness was not caused by other factors. Those other factors would be confounding variables.
What is the group that experiences no changes in the independent variable?
Controlled variables are things that must be controlled and kept the same during the experiments in order to prevent them from having an impact on results.
How can you tell if a table of values represents a function?
If all the values of the "independent" variable (x) are different then it is a function.If there are any repeats of the independent variable, the corresponding dependent variable, y, must be the same.If all the values of the "independent" variable (x) are different then it is a function.If there are any repeats of the independent variable, the corresponding dependent variable, y, must be the same.If all the values of the "independent" variable (x) are different then it is a function.If there are any repeats of the independent variable, the corresponding dependent variable, y, must be the same.If all the values of the "independent" variable (x) are different then it is a function.If there are any repeats of the independent variable, the corresponding dependent variable, y, must be the same.
The independent effect variable must occur later in time than the dependent variable?
yes
Why is it important to have a control in a science experiment?
In order to be certain that the changing of the independent variable directly affects the dependent variable, a control must be taken where the independent variable is not changed-this ensures that whatever happens to the dependent variable happens because of the independent variable, and is not something that would happen anyway.
Is the independent variable the volume of an object or the mass of an object?
The independent variable of any object depends on the experiment being performed on said object. Do distinguish whether volume or mass is the independent variable, we must first know what the experiment is. Remember that an independent variable does not change when the other factors of an experiment (the dependent variables) do change. An independent variable remains constant.
What are the independent dependent and control variables?
The independent variable is the thing you are changing/varying. The dependent variable is the thing you are measuring. This variable should be affected by the independent variable. Control variables are anything that must be kept constant. If there are any other factors which affect the dependent variable, then these need to be controlled so that they do not have any significant effect (basically ensuring that you are actually measuring the effects of the independent variable).
What variables in an experiment which must remain the same in order to perform a fair test of the independent variable?
Except for the independent variable, all other variables must remain the same between the experimental and control groups.
What type of variable must be measurable to obtain results?
either independent or dependent
What conditions must be met if you want to have a scientifically valid sample for a study?
You must have a control group, an experimental group, an experimental variable (also called the independent variable), and a response to be measured (also called the dependent variable). The experimental variable is applied only to the experimental group, so that any difference between the control group and experimental group is due only to the experimental variable. Both the control group and experimental group must have the same conditions, except for the experimental variable.
Is customer satisfaction is a dependent variable?
Well, that depends on whether 'customer satisfaction' is the cause or the effect in your analysis. If say, 'prompt attention to customer problems' were the causative (independent) variable, then the 'customer satisfaction' would be the result/outcome/dependent variable. However you could have had a study in which 'customer satisfaction' was the cause/independently variable, and 'likelihood of repeat business' were the result/outcome/dependent variable. You must distinguish between CAUSE and EFFECT. Cause is the independent variable that creates the Effect observed.
Are variable in an experiment can change True or False?
A variable does and must change, but you can only have one variable, otherwise the experiment becomes biased and unfair
What are some kinds of independent variables?
The answer depends on the context. A variable can be independent in some studies but dependent in others. Time can be an independent variable in distance-time or speed-time studies but the time (to failure of a component) is a dependent variable. Perhaps confusingly, the same two variables can swap places depending upon the context. Suppose I believe that healthier people are taller (their growth is less likely to be stunted by illnesses) then my independent variable is some measure of their health and the dependent variable is their height. If instead, I believe that taller people are healthier (their parents must have had good genes) then the independent variable is height and the dependent is health.
When might human subject research require investigators to obtain informed consent?
Investigators must obtain informed consent if the study involves interactions with research participants.Investigators must obtain informed consent if the study involves interventions with research participants.Investigators must obtain informed consent if the study involves collection of private information from or about research participants.All of the aboveD: All of the above
