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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.
model building is the essence of the operational research discuss
MEAN DEVIATION Mean deviation of a series is the arithmetic average of the deviations of various items from the median or mean of that series. Median is preferred
Demerits of Range a.It gives importance to the two extreme values and is very much affected by the extreme items. b.The range provides no information about the st
variuos types with example
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 paper i
Sequential Samplin The previous has shown that the sampling units were drawn prior to the drawing of the actual sample and has a fixed size. But the sequential sa
A paper mill produces two grades of paper viz., X & Y. Because of raw material restrictions, it cannot produce more 400 tons of grade X paper & 300 tons of grade Y paper in a week.
Uses of Standard Deviation Normal 0 false false false EN-IN X-NONE X-NONE
Knowledge: The dictionary definition of knowledge is 'organised body of information or the comprehension and understanding, consequent on having acquired an organised body of
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