5. Suppose you have values on variable Xi X1,X2, X3,
equal to
and wish to compute a
measure of variation from the mean. Without knowing what the exact values of the variable
are, which of the following measures will necessarily generate a positive number (which is of
course different from zero) regardless of the values for X;.X2.X; ,
a) the sum of absolute deviations from the mean
b) the sum of deviations from the mean
c) the sum of squared deviations from the mean
d) the standard deviation
e) a and c
f) none of the above

6. One common interpretation of the derivative in mathematics is:
a)a quadratic function
b)an instantaneous rate of change
C) the limit of a linear function
D)none of the above

7. Consider the numbers 1, 2, 3, 4 assigned to values of a variable. The variable being measured
is most likely:
a) quantitative
b) qualitative
c) one for which computing the standard deviation would likely be appropriate
d) one for which computing the median would definitely be inappropriate
e) a and c

8. Integration in calculus is generally used for:
a)
computing the rate of change of one variable with respect to another
B)computing areas under curves
C) computing areas in rectangles only
D) none of the above