An Observation Error Is the

Multiple Choice

An observation error is the

A) difference between the reported value and the "true" value.
B) failure to obtain information from some elements of the population which were selected from the sample.
C) duplication in the list of sample units.
D) failure to include some units of the defined survey population in the actual sampling frame.
E) difference between the observed values of a variable and the long-run average of the observed values in repetitions of the measurement.