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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.
what is the use of applied statistic in our daily routin life
Using Chi Square Test when more than two Rows are Present To understand this, let us consider the contingency table shown below. It gives us the information about the stage
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
data:59,59,65,70,74 176,179,195,210,200
Stratified Sampling Stratified Sampling is generally used when the population is heterogeneous. In this case, the population is first subdivided into several parts (or s
MARKS IN LAW :10 11 10 11 11 14 12 12 13 10 MARKS IN STATISTICS :20 21 22 21 23 23 22 21 24 23 MARKS IN LAW:13 12 11 12 10 14 14 12 13 10 MARKS IN STATISTICS:24 23 22 23 22 22 24 2
Do people of different age groups differ in their response to e-mail messages? A survey by the Cent of the Digital Future of the University of Southern California reported that 70.
Find unlabeled data set test.txt and initial centroids data set centroids.txt in the archive, both files have the following format: [attribute1_value attribute2_value ...
Systematic Sampling In Systematic Sampling each element has an equal chance of being selected, but each sample does not have the same chance of being selected. Here,
what are characteristics of a population for which it would be appropiate to use mean/median/mode
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