The relative frequency of a class is computed by _____.

In constructing a frequency distribution, as the number of classes is decreased, the class width _____.

The union of events A and B is the event containing _____.

Using the empirical rule, approximately what percentage of the data values will be within two standard deviations of the mean for a bell-shaped distribution?

In an experiment, events A and B are mutually exclusive. If P(A) = 0.6, then the probability of B _____.

Which of the following values of r indicates the strongest correlation?

A magician holds a standard deck of cards and draws one card. The probability of drawing the ace of diamonds is 1/52. What method of assigning probabilities was used?

A data value with a z-score of −1.5 would be _____.

For a positively skewed distribution, which measure of central tendency would typically be larger?

If the variance of a data set is correctly computed with the formula using n − 1 in the denominator, which of the following is true?