Dependent Samples-The Mean of the Difference

Dependent Means:

There are two possible cases whenever testing two population means: dependent case and the independent case. Most of the books at first treat the independent, but we are going to discuss the dependent case first as it follows instantly from the test for a single population mean.

Mean of the Difference: μD

The basic idea with dependent case is to make a new variable D that is the difference between the paired values. We will then test the mean of new variable.
Some of the steps are shown below to accomplish the hypothesis testing:

A) A first write down the original claim in simple terms. For illustration: After > Before.

B) Move the whole thing to one side: After - Before > 0.

C) Call the difference you encompass on left side D: D = After - Before > 0.

D) Transform to proper notation: μD > 0

E) Calculate the new variable D and be sure to pursue the order you have stated in step 3. Do not simply take smaller away from the bigger. From this point, you can think of containing a new set of values. Technically, they are termed D, however you can think of them as x. The original values from two samples can be rejected.

F) Determine the mean and standard deviation of the variable D. We can use these as the values in t-test.

Latest technology based Statistics Online Tutoring Assistance

Tutors, at the, take pledge to provide full satisfaction and assurance in Statistics help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Statistics, project ideas and tutorials. We provide email based Statistics help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Statistics. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Statistics Homework help and assignment help services. They use their experience, as they have solved thousands of the Statistics assignments, which may help you to solve your complex issues of Statistics. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.

2015 ©TutorsGlobe All rights reserved. TutorsGlobe Rated 4.8/5 based on 34139 reviews.