Two sample tests- hypothesis testing, Operation Research

Assignment Help:

Two Sample Tests

In some  situation the researchers may be taking  statistical decisions based on two samples. Each  of the  two  samples may  represent a particular under consideration. For  example one  may be interested to study the effectiveness of teaching methods like  unstructured teaching and  structured teaching. Suppose college have changed their method of teaching from  unstructured  teaching to structured teaching recently. Then the researcher has to take a random sample of students of a particular programme from  different colleges and collect their performances before introducing the structured methods of teaching  and after introducing the structured method of teaching. The respective observation will  form  two  samples .

There are many  more examples which  are as listed below:

a.Number of defects found in the daily  lots  of items produced by a set of similar machines  before  and after  installing a costly  automatic inspection systems in them.

b. Monthly  sales revenues of a product in different regions before launching  an advertisement  campaign and after launching the advertisement campaign.

c.Number of daily transaction in a bank  before and after introducing computers.

d. Number of outpatients treated in a government hospital before and after providing modern infrastructure.

There  are various non parametric tests  but we will  discuss only a few  of the  better  known and more widely used ones.

a.The sign test

1. One samples  test

2.Two sample sign test ( sing test for  paired data)

3.A rank  sum test ( Mann Whitney u test)

4. The one  sample  runs  test

5.Rank  correlation ( described in chapter 10 )

 

 


Related Discussions:- Two sample tests- hypothesis testing

BIG M, Minimize: 60P + 120Q Subject to: 2P + 3Q >10 P + 4Q >12 P, Q> 0

Minimize: 60P + 120Q Subject to: 2P + 3Q >10 P + 4Q >12 P, Q> 0

HOMEWORK, A company uses 4 pounds of resource 1 to make each unit of X1 and...

A company uses 4 pounds of resource 1 to make each unit of X1 and 3 pounds of resource 1 to make each unit of X2. There are only 150 pounds of resource 1 available. Which of the fo

Sequencing, how the sequencing techniques help the manager

how the sequencing techniques help the manager

Scope of operations research, Scope of the OR techniques can be derived ...

Scope of the OR techniques can be derived in followings various importance fields: 1. In Agriculture : With the explosion of population and consequent shortage of food O

Reasearch on software design, Write a research paper in relation to a Softw...

Write a research paper in relation to a Software Design related topic. Diagrams and drawing of attention to key points through highlighting, bulleting etc is encouraged. Questi

Information concept and characteristics, INFORMATION AND OTHER RELATED CONC...

INFORMATION AND OTHER RELATED CONCEPTS - THEIR MEANING AND CHARACTERISTICS: You may often hear or read in newspapers and other popular magazines about "exponential growth of i

Inherent limitation concerning mathematical expressions, Operation reac Inv...

Operation reac Involves the use of mathematical models, equations and similar other mathematical expressions. Assumptions are always incorporated in the derivation of an equa

LINEAR PROGRAMMING, SOLVE THE FOLLOWING LP USING SIMPLE METHOD MAXIMIZE Z=...

SOLVE THE FOLLOWING LP USING SIMPLE METHOD MAXIMIZE Z=3X1+2X2 SUBJECT TO CONSTRAINT X1+X2 X1-X2 X1,X2>=0

Please semd ans., A paper mill products two grade of paper viz., X & Y. Bec...

A paper mill products two grade of paper viz., X & Y. Because of raw material restriction, it cannot produce more than 400 tons of grade X paper & 300 tons of grade Y paper in a we

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd