1. The statistical measures that characterize dispersion are:
A. Range, variance, standard deviation
B. Mean, median, mode
C. Range, mean, standard deviation
D. Correlation, frequencies, standard deviation
2. Define standard deviation
A. A measure of how dispersed observations around the mean
B. The square root of variance
C. The amount of variation error in the data
D. A & B above
3. A discrete random variable is:
A. outcomes over a continuous range of real numbers
B. a numerical description of the outcome of an experiment
C. one for which the number of possible outcomes can be counted
D. one for which the number of possible outcomes can not be counted
4. Two common probability distributions are ______ and _____.
A. Discrete, Continuous
B. Discrete
C. Continuous
D. None of the above