Chi-square test is a Statistical Hypothesis Testing tool (Test Statistic). The statistical hypothesis test tool is a method of statistical inference to decide the suitability of the data we have to support a particular hypothesis. The Chi-square test is written as χ2. The test is developed by Karl Pearson. In […]
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Scientific Method (Steps of Scientific Investigation and Research: Notes)
“Science is a way of thinking much more than it is a body of knowledge…” Carl Sagan Learning objectives: What is scientific methodology? | Steps of Scientific Method | Hypothesis Concept | What is an Experiment? | What is ‘Testing of Hypothesis’? | What is Theory? | Inductive vs Deductive […]
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Difference between Primary and Secondary Data
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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