Answers to Standard Scores and Variability Problems

 1.	Negatively skewed
 2.	Standard deviation; 0; 1
 3.	Variance
 4.	1.4 (65); 2.5 (52.5); -1.5 (35)
 5.	As N gets larger the range either stays the same or
	increases.
 6.	The middle of the distribution
 7.	The lower end of the distribution
 8.	20; 18; 5
 9.	College freshmen, high school seniors; male college frosh and all
10.	5.0'; 3.54
11.	-1.13 and 38.7
12.	12.08
13.	1.46
14.	The gain in reading is 2.5 z scores; the gain in composition
 	is 3.0 z scores.  Hence, the gain in composition
	is greater.