### Stats Notes

**Title:**Stats Notes

**Category:**/

**Business & Economy**/Finances and Investments

**Details:**Words: 5110 | Pages: 19 (approximately 235 words/page)

**Stats Notes**

Lesson 7
One sample to population T tests
One-Sample Significant Difference Tests
A great deal of inferential statistics is about using procedures to help us infer that a difference does or does not exist between two situations. Knowing whether two things are different allows us to make reliable, valid decisions about that information. How different does a result need to be before we can call it significant (or important)? Another way to ask this question is …showed first 75 words of 5110 total…

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…showed last 75 words of 5110 total…are these two types called?
3. What are the two assumptions of a t-test?
4. What is the difference between a null and alternative hypothesis?
5. What is the formula for the degrees of freedom for a one-sample t-test?
6. When you have made a Type I error, what has happened?
7. When you have made a Type II error, what has happened?
8. What are the factors that affect power and which of these factors do you have control over?