difference between descriptive statistics and inferential statistics

1.Describe the difference between descriptive statistics and inferential statistics.

 

2.When would someone use a hypothesis test?

 

 

3.What is a test statistic and when would it be used?

 

 

4.When would you use a one tail test and when would you use a two-tailed test?

 

 

5.What is the critical region and how is it used to make statistical decisions?

 

 

6.What is the p-value and how is it used to make decisions?

 

 

7.For what kind of test would you use the Chi-Square table?

 

 

 

8.What does Alpha (α) represent and how is it used it in hypothesis testing?

 

 

9.How is a standard normal distribution different from a normal distribution that is not standard?

 

10.Explain the principle that the regression line formula uses to best represent the data in a scatter diagram