1. If the mean and median of a population are the same, then its
distribution is:
symmetric.
normal.
uniform.
skewed.
2. The values of xmin and xmax can be inferred accurately except
in a:
dot plot.
scatter plot.
box plot.
histogram.
3. Given a sample of three items (X = 4, 6, 5), which statement
is incorrect?
The geometric mean is 5.2.
The quartiles are useless.
The standard deviation is 1.
The coefficient of variation is 20 percent.