PreClass Questions(PCQ) - 2

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1.

A psychologist interested in political behavior measured the square footage of desks used by a sample of state governors and a sample of CEOs. She found that the average square footage of desks of governors was 45, with median of 36 and SD of 12.5 while the same statistics for the CEOs were 45, 44 and 6.2 ,respectively. Interpret these data about desk size for governors and CEOs for one who is not knowledgeable about statistics

 


2.

A blood test is taken and the levels of several different components are taken. For example the sodium, chloride, calcium, the LDL and HDL levels are measured. Which of the following blood components is considered to be most extreme for this sample? Why?

 Sodium=142 with M=140 and SD=5, Chloride=113 with M=106 and SD=6, Calcium=9.5 with M=9.2 and SD=0.7, LDL=118 with M=85 with SD=20, and HDL=79.6 with M=60 and SD=10. 

 


3.

Which of the following is NOT an advantage of z scores

A.

you can compare scores from scales with different ranges

B.

you can easily tell if a score is above or below the mean

C.

you can tell how far above or below the mean the score is

D.

you can easily tell the shape of the scores' distribution

Honor Code: I did not receive help from anyone on this assignment.
I did receive help from someone on this assignment.

Revised: January 18, 2002.