permutation and combination notes
Definitions Permutation In permutation, the order of th objects or outcomes is important. Each different order represents a differen...
03:51theory of estimation and qualities of a good estimator
Theory of Estimation •Statistical estimation is the procedure of using a sample statistic to estimate a population parameter. • A S...
10:56Hypothesis Testing and procedure
Hypothesis testing is based on hypothesis; •“Hypothesis” is an assumption about an unknown population parameter; •Hypothesis testing ...
10:24intermediate microeconomics convexity and indifference curves
A set of points is convex if any two points can be joined by a straight line that is contained completely within the set. The assumption...
09:44measures of central tendencies mean, types of mean and their formula
Mean Arithmetic mean Arithmetic mean of a set of realisations of a variable is defined as their sum divided by the number of observati...
01:40types of data and methods of data collection and presentation
Data are systematic record of values taken by a variable or a number of variables on a particular point of time or over different poin...
00:59The modern periodic table
The modern periodic table was put forward by Mosley to overcome the defects of Mendeleev’s periodic table. Mosley in 1911 , proposed that ...
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