Primary vs Secondary Data Difference between Primary and Secondary Data: The data is a set of values of qualitative or quantitative variables. In statistics, the data are the individual observations. The scientific investigations involve observations on variables. The observations made on these variables are obtained in the form of ‘data’. […]
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Types of Experimental Designs in Statistics (RBD, CRD, LSD, Factorial Designs)
Completely Randomized Design (CRD), Randomized Block Design (RBD), Latin Square Design (LSD) – Advantages and Disadvantages In the previous post, we have discussed the Principles of Experimental Designs. There we discussed the concept of Experimental design in statistics and their applications. In the present post, we will discuss different types […]
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Principles of Experimental Designs in Statistics – Replication, Randomization & Local Control
What is a statistical experiment? Ø An experiment is a plan for the collection and analysis of data. Ø “It is a controlled act through which data are collected according to some pre-determined objective”. Ø The observations obtained from a carefully planned and well-designed experiment in advance only gives valid inferences. […]
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Hypothesis Testing in Statistics – Short Notes + PPT
“Truth can be stated in a thousand different ways, yet each one can be true…” Swami Vivekananda What is ‘Test of Hypothesis’? Ø Test of Hypothesis (Hypothesis Testing) is a process of testing of the significance regarding the parameters of the population on the basis of sample drawn from it. […]
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What is Data in Statistics?
What is ‘data’ or ‘variable’? Ø Data is a set of values of qualitative or quantitative variables. Ø In biostatistics (also in statistics) data are the individual observations. Ø The scientific investigations involve observations on variables. Ø The observations made on these variables are obtained in the form of ‘data’. […]
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