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’. […]
What is Statistics? Statistics is a branch of applied mathematics which deals with the collection, classification, analysis and interpretation of data. The word statistics is derived from the Latin word ‘status’ means a ‘political state’ or ‘government’. What is Biostatistics? Biostatistics is a branch of biological science which deals with […]
Phase Contrast Microscope PPT | What is Phase Contrast Microscope? What are the limitations of ordinary light microscope? Who invented the phase contrast microscope? What is the working principle of phase contrast microscope? What are the optical components of phase contrast microscope? What is the importance of Annular Diaphragm and […]
Working Principle of an Ordinary Microscope: In an ordinary microscope, the object is viewed due to differences in colour intensities of the specimen. To create the colour intensities, the specimen is first stained with suitable dyes which will impart specific colour. In an ordinary microscope, the contrast is obtained when […]
What is Titration? Titration Curve of a Weak Acid: Titration is a method to determine the concentration of a dissolved substance (analyte or titrand) in a known volume by reacting it with another substance of known concentration and volume (titrant). The volume of the reactants plays a crucial role in […]