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Stats Notes

Title: Stats Notes
Category: Business & Economy / Finances and Investments
Details: Words: 5331 | Pages: 22.7 (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 5331 total…

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…showed last 75 words of 5331 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?

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