Overview
Assignment Three - T-tests Assignment ThreeT-tests
Discuss what t-tests are. Explain the difference between one and two-tailed t-tests. Explain the usefulness of your t-test findings for statistical analysis. Download Applied Statistics from the link below as a reference.
Chose a data set and perform a t-test analysis on the data set.
Present the statistical analysis and include anything else you want from the data analysis output.
References
Phil Crewson, Applied Statistics, a Desktop Statistics Reference AppliedStatistics.pdf Download AppliedStatistics.pdf
Normal Distribution - http://stattrek.com/probability-distributions/normal.aspx Links to an external site.
Hypothesis Tests - t-Tests
Difference between means and two sample t-test -
http://stattrek.com/hypothesis-test/difference-in-means.aspx Links to an external site.
Difference between paired means - t-test -
https://stattrek.com/hypothesis-test/paired-means.aspx?tutorial=AP Links to an external site.
T Distribution Calculator -
http://stattrek.com/online-calculator/t-distribution.aspx Links to an external site.
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The Completed Assignment Could Be Like This. I. Discussion about t-tests a. What are t-test used for? b. Why t-test are inferential not descriptive statistics? c. What is the difference between the various types of t-tests? II. Statistical analysis a. identify a data set Figure One [Image unavailable: data in statistics program] Data looks like this in the statistics program. b. complete statistical procedure on the data c. report the output from the statistical program Figure Two [Image unavailable: t-test output] two sample difference of the mean t-test Figure Three [Image unavailable: more t-test output] paired sample t-test |