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# 1.) My computer program offers two types of t-tests. One is a called independent groups ttest, and the other is called dependent groups t-test. When should I use which one? 2.) How does a one-tail test compare with a two-tail test for determining the critical value? 3.) What is the difference between the mean, mode and median? 4.) Someone said a study was ex post facto? What does that mean, and how does thatinfluence my interpretation of the results? 5.) What is random selection, and why is it important in your career field? I heard it hassomething to do with samples, populations, and generalization? 6.) Why is it important to know if the data is from a normally distributed population whencalculating the mean? 7.) A Chi-Square experiment has been planned; there are three options with 8 possibleoutcomes for each. How is the degree of freedom calculated and why? 8.) A questionnaire has 10 questions that require a ranking of 1 to 5, 5 being the highestvalue. The next 10 question requires ranking from 1 to 10, 10 being the highest value. Isit possible to make a direct comparison with any non-parametric analysis? Discuss. 9.) Does a correlation of r = 0 always mean there is no correlation and if not are there anyexceptions? 10.)A correlation has been calculated as r = -0.8, what does this mean? How does itcompare to a correlation of r = 0.8?

1.) My computer program offers two types of t-tests. One is a called independent groups ttest, and the other is called dependent groups t-test. When should I use which one?
2.) How does a one-tail test compare with a two-tail test for determining the critical value?
3.) What is the difference between the mean, mode and median?
4.) Someone said a study was ex post facto? What does that mean, and how does thatinfluence my interpretation of the results?
5.) What is random selection, and why is it important in your career field? I heard it hassomething to do with samples, populations, and generalization?
6.) Why is it important to know if the data is from a normally distributed population whencalculating the mean?
7.) A Chi-Square experiment has been planned; there are three options with 8 possibleoutcomes for each. How is the degree of freedom calculated and why?
8.) A questionnaire has 10 questions that require a ranking of 1 to 5, 5 being the highestvalue. The next 10 question requires ranking from 1 to 10, 10 being the highest value. Isit possible to make a direct comparison with any non-parametric analysis? Discuss.
9.) Does a correlation of r = 0 always mean there is no correlation and if not are there anyexceptions?
10.)A correlation has been calculated as r = -0.8, what does this mean? How does itcompare to a correlation of r = 0.8?

Interested in a PLAGIARISM-FREE paper based on these particular instructions?...with 100% confidentiality?