Standard Deviation is a Statistical tool which is used to measure the deviation taken from mean value.
This video includes :-
1. Meaning of standard deviation.
2. Numerical Questions by:- Direct Method
Short-Cut Method
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1st part :-
7 days revision for 12th Economics:-
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I hope this video will help you to solve your practical problems.
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JOLLY Coaching
Economics By JOLLY Coaching.
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