Importance of normal distribution , Operation Research

Importance of Normal Distribution

Normal distribution  plays  a very  important  role in  statistical  theory  and in  particular  in sampling theory. It has  been  found  that:

a.Data  obtained  from  psychological  physical  and biological measurements  approximately follow normal  distribution .I. Q  scores heights and  weights  of individuals  diameters of machines  parts lengths of tobacco leaves are example of  measurements which are normally distributed  or nearly no.

b. Distribution like binomial  Poisson  etc can be  approximated to normal distribution,

If the number  of trials  nis   indefinitely large  and  neither  p nor q is very   small than binomial  distribution  tends  of normal  distribution.

 If the  parameter  m is  indefinitely large ( i, e, if m ) then  Poisson distribution  tends to normal distribution.

c.For large  samples  any  statistic  ( i ,e,  sample mean s, d, etc)  approximately  follows  normal  distribution  and such  it can be  studied with  the help  of normal  curve.

d.Normal  curve  is used  to find confidence  limits  of the  population  parameters.

e.Normal  distribution  are largely applied  in statistical quality  control  in industry  for  finding  control  limits.

f.The theory  of errors  of observation  in physical  measurements  is based  on normal  distribution.

Posted Date: 3/5/2013 10:19:04 PM | Location : United States







Related Discussions:- Importance of normal distribution , Assignment Help, Ask Question on Importance of normal distribution , Get Answer, Expert's Help, Importance of normal distribution Discussions

Write discussion on Importance of normal distribution
Your posts are moderated
Related Questions
a)Draw a network for the project. b)Determine the critical path. Activity Duration Activity Duration 1-2 15 5-10 22 1-3 13 6-9 33 1-4 1


G. Ambler has € 10000 available for a second hand car, but would like to buy a fast car that costs € 25000. He needs the money for that car quickly, and would like to increase his

Q1. a. What do you mean by linear programming problem? Explain the steps involved in linear programming problem formulation? b. A paper mill produces two grades of paper viz., X

Type  of  Measures  of Dispersion   a. Absolute Measure: The measure of dispersion which  is expressed in  terms of the units of the  observations( e, g, Rupees , metre ,

Significance & scope of operation research in modern management

The scientific methods is based on certain article of path these are: 1. Reliance on Evidence: Truth is established on the basis of evidence. Conclusion is admitted onl

Form of t- Distribution 1. The students  t - distribution  like the  normal  distribution has bell shaped frequency  curve which is symmetrical. The only  parameter which  det

scope of operation research in insutry and defence

#questiona paper mill produce two grades of x&y.becouse of raw material reswtriction