control of variance second basic purpose of


Control of variance:

Second basic purpose of research design is the control of variance. Research design help in manipulation of experimental variables i ,e, in seeking and establishing the relationship between the assumed cause or the experimental variable and the effect i ,e, the dependent variable. To establish such a relationship it is essential that the effect of other variables besides the experimental one should be controlled. Such variables are known as extraneous variables.

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Management Theories: control of variance second basic purpose of
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