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In this method variables beings studied are controlled by the investigator. In other the effect of one variable is observed while other relevant variables are held constant.
This methods includes field experiment as well as laboratory experimentation. In field experiment the study is conducted b comparing experimental group with the control group. In laboratory experiment the investigator creates a situation with the exact conditions he wants to have and in which he controls some and manipulates other variables. He then observes and measures the effect of the manipulation of the independent variables on the dependent variables in a situation in which the operation of other relevant factors is held to a minimum.
Disadvantages of Mean Deviation a.Mean deviation ignores the algebraic signs of the deviations and such it is not capable of further algebraic treatment. b.It is no
Use of the Graphs a . It simplifies the complexities of large numbers or that of large mass of data. In general graphical or some other method or representation is ad
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Formulation of the Problem: Before proceeding to find the solution of a problem, first of all a manager should be competent enough to form an appropriate model. To do so f
Oral Presentation At times oral presentation of the results of the study is considered effective particularly in case where policy recommendations are indicated by project
CONSTRUCTION PROCEDURE The construction of an interview schedule or questionnaire is a time consuming task requiring considerable attention to all the details. The investig
a practical example
Among other limitations of O. R the followings deserve mention: a. Basis: The operational researchers must be unbiased. An attempt to shoehorn result sin to a confirmation of ma
#what is the similarity and difference between transportation and linear programing models?
#q A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y pape
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