The Empirical Rule states that the percentage of observations in a data set (providing that the data ...

The Empirical Rule states that the percentage of observations in a data set (providing that the data set has a bell-shaped and symmetric distribution) that fall within one standard deviation of their mean is approximately:
 
  A) 68
  B) 75
  C) 95
  D) 99

Q. 2

If the probability of occurrence of event A is not affected by the occurrence of event B, then A and B are said to be:
 
  A) mutually exclusive.
  B) statistically independent.
  C) collectively exhaustive.
  D) basic events.

Q. 3

Dimensional characteristics, such as height, are an example of a:
 
  A) continuous random variable.
  B) discrete random variable.
  C) categorical random variable.
  D) any of the above

Q. 4

The probability of the intersection of events A and B is denoted by:
 
  A) A  B.
  B) P(A  B).
  C) A  B.
  D) P(A  B).

Q. 5

A variable within a range of real numbers is referred to as a:
 
  A) continuous variable.
  B) categorical variable.
  C) discrete variable.
  D) parameter.