1. The sum of the deviations about the mean always equals ________.
2. The standard deviation is used in conjunction with the ________ to numerically describe distributions that are bell shaped. The ________ measures the center of the distribution, while the standard deviation measures the ________ of the distribution.
3. True or False: When comparing two populations, the larger the standard deviation, the more dispersion the distribution has, provided that the variable of interest from the two populations has the same unit of measure.
4. True or False: Chebyshev's Inequality applies to all distributions regardless of shape, but the Empirical Rule holds only for distributions that are bell shaped.