When using random digit dialing as a sampling technique, it is ...

[justinmsk]

When using random digit dialing as a sampling technique, it is desirable to remove _____ numbers first.
 
  a. unlisted c. business
  b. residential d. a and c

Question 2

Inferential statistics _________.
 
  a. is the same as descriptive statistics
  b. also uses methods of descriptive statistics
  c. allows one to make inferences about a sample based on population data
  d. allows one to make inferences about a population based on sample data
  e. also uses methods of descriptive statistics and allows one to make inferences about a population based on sample data

[atrochim]

Answer to Question 1

C
People should be contacted in their homes, and people with unlisted numbers should have an equal likelihood of being contacted as everyone else in the population.

Answer to Question 2

E