In a data set with 18 variables, if 11% of the values, randomly spread across observations, are missing (blank), what is the probable percent of complete and usable observations?
A) 89%
B) 11%
C) 12.27%
D) 7.70%

Question

Quizplus · Accepted Answer

Given that 11% of values are missing randomly across observations in a dataset with 18 variables, the probability of an observation being complete (i.e., having no missing values) is (1 - 0.11)^18, as each of the 18 variables has an 89% chance of being present. Calculating this gives approximately 0.1227 or 12.27%, indicating that about 12.27% of observations are likely to be complete and usable.

In a Data Set with 18 Variables, If 11% of the Values