Discussion:
Q1: Many times researchers preselect the value of alpha of .01 or .001. What are the factors that allow selection of either of those levels of significance?
Q2: When computing Independent Sample Test, the SPSS output contains the section stating that Confidence Interval of the Difference. What is a Confidence Interval and what is the practical use or benefit of knowing its lower or upper value, especially when conducting t-test analysis?
Q3: How do you determine if the hypothesis is nondirectional or directional; is this determination made before or after you view the data?
Q4: When utilizing Z scores, is there a limit to the amount of variables? Does it affect the mean and/or the standard deviation?
Q5: In what types of situations or research are continuous variables and discrete data used and how will a corporation utilize the data in a report?