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

Rehearse Making  presentation is not  simple. It  is extremely  important  for us  to realize the sanctity of rehearsing  to improve the quality of the presentation. Unless

Do it  Everything  about  the presentation is  ready and so  are you. The only  things  left if to face the audience in a confident and positive  manner and leave a mark on

Components Included in the Proposal Personnel In case the proposal is addressed to the funding agencies, the qualifications of the key project personnel for study should be

Assignments should be submitted via FLO by the above deadline. Penalties for late submission are as set out in the topic SAM on FLO. Extensions can be granted in line with standard

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

write the scope of operation research


b. 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

Tied Ranks Equal or Repeated Rank When  two or more  items  have equal values  it is  difficult  to give ranks  to them. In  that case  the items are given  the average of the