Statistical errors, Applied Statistics

Assignment Help:

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. 


Related Discussions:- Statistical errors

Sensitivity and Specificity tests, The prevalence of undetected diabetes in...

The prevalence of undetected diabetes in a population to be screened is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure

Determine the closed loop speed transfer function, In the case of permanent...

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

Calculate mean and standard deviation, Select and generate your assignment ...

Select and generate your assignment portfolio. The S&P/ASX 200 index is comprised of several sub-indices, including the following: 0) XPJ: The S&P/ASX 200 A-REIT Index 1) XDJ

Cluster analysis, These techniques are applied when the rows and the column...

These techniques are applied when the rows and the columns of the data table represent the same units and when the measure is a disiance or a similarity. The goal of the analysis i

Sampling, Sampling A  Population  is a collection of all the data point...

Sampling A  Population  is a collection of all the data points being studied. For example, if we are studying the annual incomes of all the people in India, then the population

#title., Features of index numbers

Features of index numbers

Statistics assignment, To compare three brands of computer keyboards, four ...

To compare three brands of computer keyboards, four data entry specialists were randomly selected. Each specialist used all three keyboards to enter the same kind of text material

Multivariate analysis, Multivariate analysis involves a set of techniques t...

Multivariate analysis involves a set of techniques to analyse data sets on more than one variable. Many of these techniques are modern and often involve quite sophisticated use of

Time series, what is the use of applied statistic in our daily routin life

what is the use of applied statistic in our daily routin life

Compare the t interval with the bootstrap interval, Jocko's Garage has been...

Jocko's Garage has been accused of insurance fraud. Data on estimates made by Jocko and another garage were obtained for 10 damaged vehicles (available in 'jockogarage.txt'). Here

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd