Assumptions about the pattern of hetroscedasticity

Warning: preg_match(): Compilation failed: invalid range in character class at offset 4 in /home/theindnqueen40/public_html/ecopointindia.com/wp-content/plugins/lightbox-plus/classes/shd.class.php on line 1120

Warning: preg_match(): Compilation failed: invalid range in character class at offset 4 in /home/theindnqueen40/public_html/ecopointindia.com/wp-content/plugins/lightbox-plus/classes/shd.class.php on line 1120

Warning: preg_match_all(): Compilation failed: invalid range in character class at offset 4 in /home/theindnqueen40/public_html/ecopointindia.com/wp-content/plugins/lightbox-plus/classes/shd.class.php on line 621

Warning: Invalid argument supplied for foreach() in /home/theindnqueen40/public_html/ecopointindia.com/wp-content/plugins/lightbox-plus/classes/shd.class.php on line 628

Warning: preg_match_all(): Compilation failed: invalid range in character class at offset 4 in /home/theindnqueen40/public_html/ecopointindia.com/wp-content/plugins/lightbox-plus/classes/shd.class.php on line 621

Warning: Invalid argument supplied for foreach() in /home/theindnqueen40/public_html/ecopointindia.com/wp-content/plugins/lightbox-plus/classes/shd.class.php on line 628

Assumptions about the pattern of hetroscedasticity Continue reading →

Whites test for hetroscedasticity

Whites test for hetroscedasticity Continue reading →

5 Archimedean Property of the real numbers and associated corollary

The Archimedean property of R explains that for any real number x there always exists a natural number after it i.e. x<n. intuitively this property simply means that the set of natural numbers is unbounded because it is not bounded above and that what we will prove in the first video.

In the next video we will prove a corollary of this property which explains why the set of all numbers of the form 1/n will have its Infimum as 0.

In the third video we will see how the Archimedean property is used to prove why for any real number we can find a natural number such that 0< 1/n <x.

In the fourth video in this post gives us two more corollaries of the Archimedean property which tell us that any interval [n,n+1) would contain many real numbers, and also the existence of a square root.

In the final video we will discuss the Density theorem that comes through the Archimedean property and asserts the existence of many rational numbers between any two real numbers. Continue reading →

lin log model

lin log model Continue reading →

log lin model

log lin model Continue reading →

log log model

log log model Continue reading →

Functional forms elasticities

Functional forms elasticities Continue reading →

Functional Forms introduction

Functional Forms introduction Continue reading →

How to identify multicollinearity

How to identify multicollinearity Continue reading →

Consequences of ignoring multicollinearity

Consequences of ignoring multicollinearity Continue reading →

3 Lagrangean Method concepts you must know

Lagrangean method is a way of locating local optimum subject to constraints. Suppose we have an objective function f(x,y) and we want to find an optimum of this function subject to the constraint g(x,y) =c. In order to find optimum, form a lagrangean function L(x,y,λ; c) = f(x,y) + λ(c-g(x,y)), where λ is the lagrangean multiplier.

In this series of videos, we formally derive the first order conditions and second order conditions of lagrangean method. Then, to support our formal proof, we provide some example of how lagrangean method works in practice Continue reading →