Which of the Following Is TRUE Concerning Sampling Errors

Multiple Choice

Which of the following is TRUE concerning sampling errors?

A) Sampling errors can be reduced by improving data collection methods.
B) The degree of sampling error can be estimated.
C) Sampling errors have been consistently shown to be the major contributor to total survey error.
D) Sampling errors are frequently the most important errors that arise in research.
E) It is difficult to estimate the size and effects of sampling errors.