0
Why is it important to establish a cause and effect between the selected known variable and unknown variables?
Wiki User
∙ 11y ago
To show the highest degree of validity of a hypothesis.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
To eliminate the influence of uncontrolled variables during experimentation?
establish a control group identical to the experimental group except for the variable being tested
What does variable held constant mean?
The distinction between these two types of variables is whether the variable regress on another variable or not. Like in a linear regression the dependent variable (DV) regresses on the independent variable (IV), meaning that the DV is being predicted by the IV. Within SEM modelling this means that the exogenous variable is the variable that another variable regresses on. Exogenous variables can be recognized in a graphical version of the model, as the variables sending out arrowheads, denoting which variable it is predicting. A variable that regresses on a variable is always an endogenous variable even if this same variable is used as an variable to be regressed on.
Is a constant a number variable or the product of a number and one or more variables?
A constant is not a variable at all, and none of its factors was a variable. It is constant.
What kind of research is needed to establish a cause-and-effect relationship between two variables?
You need to set up an experimental study. The variable which is the cause should be randomly assigned and the effect variable is then observed. Other study designs can only tell you that there is a link or correlation, but not necessarily a causal relation.
What are interfering variables?
An intervening variable is a hypothetical internal state that is used to explain relationships between observed variables
Why is important to control variables in an experiment?
So that you can know what is the manipulating variable, the controlling variable, and the responding variable! To control the variables!
What is the function of a control in a scientific investigation?
You establish a controlled variable from which you can compare your results from your experimental variables.
How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare?
The test variable (independent variable) controls the outcome variable (dependent variable).
Why is an independent variable important?
it is important because it is the variable that will never change you dependent variable changes due to your independent variables value
What is the most important variable in rate of travel?
There are two variables both of which are equally important so there is none which is MOST important.
Why is it important to control variables in a scientific experiment?
It is important to have controlled variables in a scientific experiment because it is the variable that remains the same it doesn't change. Its a consent & can be measured against.
Why is it important to be able to solve for the variable in a formula?
Solving for one variable makes it easy to put in a value for the other variables, and find a value for the first variable.
What are the 3 kinds of variables?
independent variable,depedent variable and control variable are the 3 kinds of variables.
Variables that do not change in a experiment?
the dependant variable
To eliminate the influence of uncontrolled variables during experimentation?
establish a control group identical to the experimental group except for the variable being tested
What is another name for independent variable?
independent variable called also predictor variables,explanatory variables,manipulated variables etc.
What are variables and uncontrolled variables?
A Controlled Variable is a variable that will stay the same. An Uncontrolled Variable is a variable that stays at random during testing.
