Thursday and Weekend HW!

Tonight, answer the following questions...this will help us to drive the z-score formula in class tomorrow!

The SAT's are designed to have a mean of (roughly) 500 for one section of the test, with a standard deviation of 100.

a.) Consider an SAT score of 610 on one section. How many standard deviations above the mean is a score of 610?

• Do some math! Your final answer should be a number!

b.) Now, consider an SAT score of 390 on one section. How many standard deviations below the mean is a score of 390?

• Do some math! Your final answer should be a number!

c.) Examine the math you did to answer questions (a) and (b). Your challenge is to consider your work in (a) and (b) and translate your ideas into a generic formula.

• Let "x" represent a data value (or the given SAT score, like 610 or 390).
• Let "x-bar" represent the mean
• Let "Sx" represent the standard deviation.
• Write an equation using these three variables to find "the number of standard deviations above or below the mean." 

Weekend HW:

This weekend you have a chapter 5 take home quiz! This is a major quiz grade, so take your time and work diligently! This is like 4 vocab quizzes combined so be sure to use your notes and get an A!