Primary and Secondary Data:

Primary Data: These data are those are collected for the first time. Thus primary data are original in character and gathered   by actual observation, measurement or enumeration. these data are called primary because they are collected from the very source from where information got generated.

Secondary Data: These data are those which have already been collected by other persons or other agency, in other words secondary data are those which have been passed through the statistical machine   at last once. These data are detached from the original source and are reprocessed by another person for his won purpose and publication.

The data which are primary in the hands of one may secondary in the hands of others. For example the census of population statistics collected by the government is primary data, if the same data are used by other investigator for his survey, will  be called secondary data .thus the statistical data which are new in the hands of investigator are primary, while  the same data use by another investigator will become secondary.

Posted Date: 9/26/2012 7:13:45 AM | Location : United States

Ask an Expert

Related Discussions:- Primary and secondary data, Assignment Help, Ask Question on Primary and secondary data, Get Answer, Expert's Help, Primary and secondary data Discussions

Write discussion on Primary and secondary data
Your posts are moderated

Write your message here..

Related Questions

Econometrics, implications of multicollinearity implications of multicollinearity

Correlation, Correlation The correlation is commonly used and a useful... Correlation The correlation is commonly used and a useful statistic used to describe the degree of the relationships between two or more variables. Pearson's correlation refle

Principal components analysis, In the context of multivariate data analysis... In the context of multivariate data analysis, one might be faced with a large number of v&iables that are correlated with each other, eventually acting as proxy of each other. This

Frequency distribution, mark number of student 0-10 4 10-20 8 ... mark number of student 0-10 4 10-20 8 20-30 11 30-40 15 40-50 12 50-60 6 calculate frequency distribution

Sample standard deviation, Sample Standard Deviation So far, we discu... Sample Standard Deviation So far, we discussed the population standard deviation. Now, let us switch to sample standard deviation(s) that is analogous to the population stand

Confidence interval, a) List down several measures of central tendency and ... a) List down several measures of central tendency and define the difference among them? b) What do you mean by confidence interval, and why it is useful? What is a confidence lev

Distrbution., The score distribution shown in the table is for all students... The score distribution shown in the table is for all students who took a yearly AP statistical exam. An AP statistics teacher had 59 students preparing to take the AP exam. Though

Difference between correlation and regression analysis, Difference between ... Difference between Correlation and Regression Analysis 1. Degree and Nature  of Relationship: Coefficient of correlation measures   the degree  of covariance  between two vari

Displacement of a simply supported beam, The displacement of a simply suppo... The displacement of a simply supported beam subject to a uniform load is given by the solution of the following differential equation (for small displacements); and q is th

Bernoulli''s theorem, Bernoulli's Theorem If a trial of an experiment c... Bernoulli's Theorem If a trial of an experiment can result in success  with probability p and failure with probability q (i.e.1-p) the probability of exactly r success in n tri