Methods of calculation of standard deviation , Operation Research

Methods  of calculation of standard deviation

a.Calculation of Standard  Deviation  - Individual Series: There  are two methods of calculating standard  deviation in an individual  observation or series

a.Deviation Taken from Actual Mean: This method is adopted when  the mean  is a whole  number of an even number . the   followings are the steps.

1.Find out the  actual  mean  of the series ( ) .

2.Find out  the deviation of each  value  from the mean ( X -)

3.Square the deviations and  take the total  of squared devotions∑ X2.

4. Divide the total (∑X2) by the number  of observations. The square  root  of the  quotient is standard deviation. Thus  apply the  following  formula:

                               = √∑X2/ N  or √ ∑ (X- )/ N


Posted Date: 3/4/2013 10:54:49 PM | Location : United States

Related Discussions:- Methods of calculation of standard deviation , Assignment Help, Ask Question on Methods of calculation of standard deviation , Get Answer, Expert's Help, Methods of calculation of standard deviation Discussions

Write discussion on Methods of calculation of standard deviation
Your posts are moderated
Related Questions
Construct a two-variable LP model that: · Maximizes Z; · All coefficients in the objective function are greater than 500; · Includes at least 5 constraints;


Minimization Example  A farmer is advised to utilize at least 900 kg of mineral A and 1200 kg of mineral B to increase the productivity of crops in his fields.

maximum 3x1+x2+x3-x4 subject to x1+5x2+3x3+4x4 x1+x2=-1 x3+x4

a. Explain the method of "Taylor's Scientific Management". List the elements of Taylor's Scientific Management. b. List the necessary managerial functions of a Manager. Explain.

Write a note on economic interpretation of dual?

Problems based on LPP when feasible region is unbounded.     1.    Minimize z = 3x + 5y subject to constraints  X + y ≥ 2 X + 3y ≥ 3 X, y ≥ 0 script

Question A - Linear Programming is most widely used technique for large number of applications in business industry as well as in various other fields. Describe in brief the steps

Research Methodology 1. Discuss how the research will be executed to achieve the proposed research objectives. The methodology should be based on the methods that are used in