statistic

1.     From chapter 1 of your text, the statistical significance of a study can differ from its practical significance.  Think of a situation at home, at work, or in a class where statistical significance differed from its practical significance.

Here’s an example:

Students in my high school statistics class can retake one exam per semester.  On this retake, the highest score given is 75%.

A student scores a 70% on a test and believes they can score the maximum of 75% on a retake.

If they retake the test, their grade will go up significantly (statistically), but they may want to wait and use their one retake on a different exam (practical).