Variance, Applied Statistics

 

Variance

The term variance was used to describe the square of the standard deviation by R.A.Fisher. The concept of variance is highly important in areas where it is possible to split the total into several parts, each attributable to one of the factors causing variation in their original series. Variance is denoted by σ2 in case of population and s2 in case of sample.

Variance is the average squared deviation from the arithmetic mean. The smaller the value of σthe lesser the variability or greater the uniformity in the population.

 

Posted Date: 9/14/2012 3:27:59 AM | Location : United States







Related Discussions:- Variance, Assignment Help, Ask Question on Variance, Get Answer, Expert's Help, Variance Discussions

Write discussion on Variance
Your posts are moderated
Related Questions
find the expected value of the mean square error and of the mean square reggression

how can i use continuous frailty in multi state models?

The incidence of occupational disease in an industry is such that the workers have a 20% chance of suffering from it. What is the probability that out of six workers 4 or more will

Lorenz Curve   It is a graphic method of measuring dispersion. This curve was devised by Dr. Max o Lorenz a famous statistician.  He used this technique for wealth it i

solve problems

prove standard deviation of natural natural numbers

Weighted Arithmetic Mean Another aspect to be considered is the importance we assign to each observation. The arithmetic mean as we calculated it so far gives equal


Choose any published database from the internet or Bethel library (such as those from the Census Bureau or any financial sites). You may opt to use one of the data files provided b

The management at Superior Health Care System Incorporated recently purchased several new facilities including the central patient information management center. This purchase will