Job Analysis and Human Resource Planning
A Job can be described as a group of tasks which is assigned to the individual employees for ensuring achievement of the organizational goals. When this job is analyzed in terms of determination of the skills, duties and knowledge required for completion of tasks, it is regarded as Job analysis. In the words of Geisler […]
Mexico: The Auto Hub of the World
Bavarian Motor Works (BMW), which is a world famous car manufacturing company, has now set up its plant in Mexico. The company plans to use this plant to manufacture more of its famous 3 series vehicles. The unique thing about this plant is that it has been set up despite Trump’s constant blackmail to automobile […]
Employee Relationship Management (ERM) through Information System
Introduction Employee relationship management is management of relationship between employees and employers. It is made up of initiatives which improve employee morale and loyalty towards the company. Employee relationship management approach looks to maintain effective relationship through three way approach of continuous communication, conflict resolution and employee development. Importance of Employee Relationship Management Employee is […]
Factors affecting Inventory Operations
Inventory management operations are increasingly being outsourced to third party service providers, thereby ensuring that the investments and costs in managing the inventories are reduced. This is a welcome trend provided the companies focus on overseeing and reviewing both inventory management as well as inventory operations periodically to ensure proper controls are maintained and processes […]
What is Ease of Business rankings and why do they matter to countries like India?
The Recently Published Ease of Business Rankings The news that India jumped 30 places in the Ease of Business Rankings as published by the World Bank and which covers 190 countries worldwide was met with jubilation and chest thumping by the Indian Government, which promptly announced that the Indian Economy was on a path to […]
Hypothesis testing is one of the statistical method used to confirm the effect that critical few inputs have on the outputs. Hypothesis testing must be used when the inputs are measured discretely. The outputs may be discrete or continuous. However the inputs must be discrete, if the inputs are continuous then correlation and regression testing may be used. The fundamentals of framing a hypothesis have been explained in this article:
Any hypothesis testing always has two hypothesis, the null and the alternate hypothesis. The null hypothesis testing shows no relation between the samples, whereas the alternate test accepts the existence of a relationship. Hypothesis testing therefore considers both the possibilities. It statistically reaches a decision as to which of the two hypothesis is valid.
The very name null signifies zero. The null hypothesis therefore implies no relationship in the variable parameters that are being measured. The null hypothesis states that there is no significant difference in the samples being measured.
For instance consider a sample of people being served at Branch A of a bank and customers being served at Branch B of the bank and service level is the parameter being measures. The null hypothesis will state that there is no statistically significant difference between the service levels at Branch A and Branch B.
Similarly the null hypothesis can be written for multiple branches. It can state that there is no statistically significant difference in the service levels of Branch A, Branch B, Branch C, Branch D and Branch E.
The alternate hypothesis by its definition is the one that is opposed to the null hypothesis. We never select the alternate hypothesis. When we reject the null hypothesis, the alternate hypothesis automatically gets selected. There are various types of hypothesis like:
It is important to understand whether the alternate hypothesis should be written in the directional or non-directional form. This is because the statistical tests being used at the background change significantly.
Formulating the problem correctly maybe the most important role for the Six Sigma project person in the analyze phase. This is because there are tools which can automatically solve the problem, but that is only after they have been correctly formulated.
Your email address will not be published. Required fields are marked *
