Related and Independent t-Tests

by Linn Oatis, April 2015

300 words

1 page

essay

The t-test is one of the most frequently used statistical procedures. It compares the means of two groups. The t-test can be divided into two types - the test which analyses data from groups which are independent and the t-test which is performed on the basis of information about related groups. In the second case the participants of the test do not share many common characteristics, while those who participate in the independent t-test do.

In order to analyze the data from the table, it is necessary to perform the following steps:

Create sample 1 and list data for it

Create sample 2 and list data for it

Define the number of replicates for each of the samples

Calculate each sample’s mean

Both samples should have s 2 calculated.

The two means calculated in the previous step should have calculated variance

sd should be calculated as well in order to find out the square root

t value requires calculation

the t-table should be entered at the freedom degrees; it is also necessary to choose the level of the significance which is normally required and read the t value which is tabulated;

If the t value turns out to exceed the tabulated value, this means that the level of probability is significantly different.

The variables included in the analysis would be gender, age, Pre-MBI, Post-MBI, days_tx, case, and weight loss. The dependent variables would be gender and age, the rest are independent since these are the most likely to demonstrate different results. However, dependent t-test should be used in order to compare the groups by the issue of gender and age – such analysis is more likely to bring scientific contribution and lead to conclusion which might be related to health promotion (Student’s T-test).

References

Student’s T-test. Retrieved from HYPERLINK "http://www.biology.ed.ac.uk/archive/jdeacon/statistics/tress4a.html" http://www.biology.ed.ac.uk/archive/jdeacon/statistics/tress4a.html

RELATED AND INDEPENDENT T-TESTS PAGE \* MERGEFORMAT …

Download will start in 20 seconds

Disclaimer

Note that all papers are meant for inspiration and reference purposes only! Do not copy papers in full or in part. Papers are provided by other students, who hold the copyright for the content of those papers. All papers were submitted to TurnItIn and will show up as plagiarism if you try to submit any part of them as your own work. Assignment Lab can not guarantee the quality of the user generated content such as sample papers above.