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

LP - Assignment problem, I have looked at Hungarian algorithm to solve assi...

I have looked at Hungarian algorithm to solve assignment problem, but it seems like it is limited to 1-to-1 assignment. I would like to know how to do 1-to-3 assignment.

Sing test- hypothesis testing, SING TEST The sign test  is the simples...

SING TEST The sign test  is the simplest  of the  parametric  tests. Its name comes  from the  fact  that it is based  on the direction ( or sings  for  pluses or minuses ) of

Liner programming problem, A constraints in an LPP restricts? (Value of obj...

A constraints in an LPP restricts? (Value of objective function,Value of decision variable,Use of available resources, uncertainty of optimum value) please help me to find out righ

Operation research techniques, Select five Operations Research techniques a...

Select five Operations Research techniques and describe in detail the real world application of such techniques in business decision making.

Describe operation research, Describe Operation Research and discuss its ap...

Describe Operation Research and discuss its applications in various organizations. A company assembles heavy duty refrigerators and uses two types of compressors A & B. Two comp

Summary report - report writing presentation, Summary  Report The  r...

Summary  Report The  report  format  suggested  above  does  not  contain  any  summary  section. This exclusion  is deliberate. The summary  should  not be  prepared until t

Assignment, A paper mill produces two grades of paper viz., X and Y. Becaus...

A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i

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