Symmetric or skewed? Would you expect the data sets that follow to possess relative frequency distributions that are symmetric, skewed to the right, or skewed to the left? Explain.
a. The salaries of all persons employed by a large university
b. The grades on an easy test
c. The grades on a difficult test
d. The amounts of time students in your class studied last week
e. The ages of automobiles on a used-car lot
f. The amounts of time spent by students on a difficult examination (maximum time is 50 minutes)
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