A source of error resulting from the fact that information is available only on a subset of the ...

A source of error resulting from the fact that information is available only on a subset of the total population is referred to as a(n):
 
  A) nonsampling error.
  B) irrelevant error.
  C) inaccurate error.
  D) sampling error.

Q. 2

The standard deviation of the scores is:
 
  A) 0.304
  B) 1.333
  C) 1.744
  D) 1.838

Q. 3

Two events A and B defined on a sample space S are said to be collectively exhaustive if:
 
  A) A  B =
  B) A  B =
  C) A  B = S
  D) A  B = S

Q. 4

Suppose a sample size of 50 is desired and the population consists of 2,500 names in alphabetical order. The jth, or systematic sampling number would be:
 
  A) 50.
  B) 100.
  C) 250.
  D) 500.

Q. 5

A researcher randomly picks the first item or subject from a population, N then selects each jth subject where j is the ratio of the population size, N to the desired sample size, n. In this case, the researcher is using:
 
  A) random sampling.
  B) systematic random sampling.
  C) population sampling.
  D) parameter sampling.

Q. 6

Which term is used to describe the probability of the intersection of events A and B?
 
  A) subjective probability
  B) marginal probability
  C) joint probability
  D) conditional probability