Statistical errors, Applied Statistics

Statistical Errors             

Statistical data are obtained either by measurement or by observation. Hence to think of perfect accuracy is only a delusion or a myth, It is not possible to ensure perfect accuracy. This is one  of the vital limitation inherent  in  statistical  studies. Dr. A .L. Bowley has rightly said, this is not inexistence a perfectly accurate measurement physical or economical just as there is no perfectly straight line or a perfect fluid.

In the science of statistics, the difference between the observed value and the true value is called error for example. In a population census there is no guarantee that not a single person   is left out. While measuring the weight of the students, no one can guarantee that there will be perfect accuracy in the measurement. These inaccuracies are called error in statistics. It does not mean mistake.

If there are 62 students in a class room, and we count themes 60 it is a mistake. But on some basis if approximate them to be60 it is called an error  in statistics, According to  Prof. L. R. Connor  an error  in the statistical sense is merely a different  between  an estimate and the true value or idea value which it may be impossible to determine exactly. According to prof. Boddington. The statistical  error  is the difference  between the true  figure and the approximation Prof, Boddington has clarified that the error does not impel an arithmetic miscalculation, but arises simply because  in collecting data a perfect coverage in impossible as with sampling. 

Posted Date: 9/26/2012 7:32:00 AM | Location : United States







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

Write discussion on Statistical errors
Your posts are moderated
Related Questions
real time applications on graphical representation of o-give curves

In the case of permanent magnet DC motor whose stator consists of a permanent magnet we can take the field current to be constant (i.e. a constant magnetic field) and it can be sho

just wondering what would be the cost to complete a stats assignment

Analytical Approach We will illustrate this through an example. Example 1 A firm sells a product in a market with a few competitors. The average price charged by the

2 bidders have identical valuations of an object for sale. The value of the object is either 0; 50 or 100, with equal probabilities. The object is allocated to one of the bidders i

Analysis of variance allows us to test whether the differences among more than two sample means are significant or not. This technique overcomes the drawback of the method used in

Grouped data  For grouped data, the formula applied is  σ = Where f = frequency of the variable, μ= population mea

Measures of Dispersion Box 3: Food vs. Oil Below are the figures for foodgrain procurement   and cr

how can we graph a trend line by semiaverages and least square method?

The Neatee Eatee Hamburger Joint specializes in soyabean burgers. Customers arrive according to the following inter - arrival times between 11.00 am and 2.00 pm: Interval-arriva