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

Genmod procedure, The following dataset is from a study of the effects of s... The following dataset is from a study of the effects of second hand smoking in Baltimore, MD, and Washington, DC. For the 25 children involved in this study the outcome variable is

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

Test the null hypothesis, A consumer preference study involving three diffe... A consumer preference study involving three different bottle designs (A, B, and C) for the jumbo size of a new liquid detergent was carried out using a randomized block experimenta

Standard deviation , Standard Deviation  The concept of standard deviat... Standard Deviation  The concept of standard deviation was first introduced by Karl Pearson in 1893. The standard deviation is the most important and the popular measure of disp

Hydraulic actuator design matrix, The range of actuator design parameters h... The range of actuator design parameters have been provisionally assessed and are presented in Table (3). You are required to determine the following parameters: The circumfer

Ryan-joiner - normal probability plot, The Null Hypothesis - H0:  The rando... The Null Hypothesis - H0:  The random errors will be normally distributed The Alternative Hypothesis - H1:  The random errors are not normally distributed Reject H0: when P-v

Enumerate the set, Grid is the set of pairs {1, 2, 3, 4} x {1, 2, 3, 4}. ... Grid is the set of pairs {1, 2, 3, 4} x {1, 2, 3, 4}. Image is the power set of Grid. An element of Image is a subset of Grid and can be represented by a diagram on a 4 by 4

QUARTILE DEVIATION, Examples of grouped, simple and frequency distribution ... Examples of grouped, simple and frequency distribution data

What is the p-value, Use the information given below to find the P-value. ... Use the information given below to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to

X-bar charts when the mean and standard deviation not known , Charts when t... Charts when the Mean and the Standard Deviation are not known We consider the data corresponding to the example of Piston India Limited. Since we do not know population mean a