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There are three main types of t-test. An Independent Samples t-test compares the means for two groups. A Paired sample t-test compares means from the same group at different times (say, one year apart). A-One sample t-test tests the mean of a single group against a known mean. A paired t-test (also called a correlated pairs t-test, a paired-samples t-test or dependent samples t-test) is where you run a t-test on dependent samples (statisticshowto.com, 2020).

A one-sample t-test is used to compare the mean of a single sample with a value that is expected based on some prior knowledge. For example, the long-term average high temperature in the Twin Cities on 1^st April is 50^oF. If we had data on the high temperature for each 1^st April from 1998-2017 (n = 20), and if these data had a normal distribution, we could perform a one-sample t-test to determine whether the average high for the past 20 years was significantly different from the long-term average of 50^oF.

A two-sample t-test is used to compare two sample means to determine if they are significantly different from each other. For example, if we had data on the Twin Cities 1^st April high temperatures for the years 1978-1997 and 1998-2017, we could use a two-sample t-test to determine whether the average high for the most recent 20-year period was significantly different from the average high for the previous 20-year period.

A paired t-test is used to compare two sample means if each value within one of the samples can be sensibly paired with an equivalent value in the other sample. For example, if we had data on the 1^st April high temperatures in Duluth for 1998-2017, we could do a paired t-test to determine whether the average Duluth temperature during this period was significantly different from the average Twin Cities temperature during the same period. In this example, the two high temperatures for 1998 (Duluth and Twin Cities) can be sensibly paired with one another, as can every other pair of temperatures have taken on 1^st April of the same year. Contrast this with the two-sample test above, where there is no sensible justification for pairing 1978 in the first sample with 1998 (or any other year) in the second sample (stthomas.edu, 2020).

Reference

stthomas.edu. (2020). T-tests. Retrieved from https://www.stthomas.edu/biology/current/statistic…

statisticshowto.com. (2020). T-Test. Retrieved from https://www.statisticshowto.com/probability-and-st…

Respond to the bold paragraph ABOVE by using one of the option below… in APA format with At least two references and a minimum of 200 words….. .(The List of References should not be older than 2016 and should not be included in the word count.)

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• Offer and support an opinion.

• Validate an idea with your own experience.
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Be sure to support your postings and responses with specific references to the Learning Resources.

It is important that you cover all the topics identified in the assignment. Covering the topic does not mean mentioning the topic BUT presenting an explanation from the context of ethics and the readings for this class

To get maximum points you need to follow the requirements listed for this assignments 1) look at the word/page limits 2) review and follow APA rules 3) create subheadings to identify the key sections you are presenting and 4) Free from typographical and sentence construction errors.

REMEMBER IN APA FORMAT JOURNAL TITLES AND VOLUME NUMBERS ARE ITALICIZED.