Probability with examples

Probability Definition ”If an experiment can result in n equally likely, mutually exclusive and exhaustive outcomes and m of which are favorable to the occurrences of an event A, the probability that the event A will occur is given by the ratio m/n. Symbolically, the...

Sample Space in Statistics

Introduction The idea of probability is familiar to everyone. In our daily life we make statements such as the following; “It is likely to rain today.” “I will probably go abroad this year.” “I am almost sure that I will win this game.” “The probability that nuclear...

Aggregate Demand : Summary

 Aggregate Demand We know that when it comes to people demand for money – there are 3 elements that has the ability to change the decisions of the individuals in either spending more or less. And these elements are: Income (Output) Interest rate (I) Price Level (P) In...

Types and Strategies of Game Theory

Types of Game Theory Cooperative Game :  It is an economic game played by firms in which players or firms can negotiate on binding contracts which allows them  to make mixed or joint strategies. Example: Ahmed and Ali are buyer and seller respectively and they are...

Game Theory Introduction

To understand the game theory , one must be familiar with the exact definition of word “Game” . The word game means “ Any physical or mental activity that humans do for the sake of pleasure or simply the competition between two players”. So,...

Circular Flow of Income

Circular flow of income is a neoclassical model which tells us how income or money circulates in an economy. Circular flow of income means that income and expenditure  in an economy are related to each other in a circular way. Receiving of income and production of...

Standard Deviation

Definition “The standard deviation is defined as the positive square root of the mean of the squared deviations of the values from their mean.” Characteristics of Standard Deviation: i. The standard deviation is affected by the values of every observations. ii. The...

Quartile Deviation

Definition The quartile deviation is half the difference between the third quartile and the first quartile of a frequency distribution, or simply distribution. Mathematically, quartile deviation would be represented as follows; Quartile deviation is also known as...

Basics of Correlation

  Definition “Correlation is an analysis in which we study the degree of closeness of relationship between the variables.” Explanation Where the values of two variables vary in such a way that the movements i.e. increase or decrease, in one variable is connected with...

Regression

Definition “Regression is a process by which we estimate one of the variables, which is dependent variable, on the basis of another variable, which is independent .” Dependent Variable Dependent variable is the one which is intended to be estimate or predicted is...

Mode in Statistics

Definition The mode is defined as the value in the data, which occur the greatest number of times in an array of data. For example i. The mode of the values 2, 5, 7, 8, 9, 9 and 10 is 9 ii. The mode of the values 11, 12, 12, 14, 15, 15, 15, 17, 17 and 19 is 15....
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