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Author Question: Random digit dialing is a sampling techniques that was developed in order to _____. a. obtain ... (Read 151 times)

TVarnum

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on: Jun 19, 2018
Random digit dialing is a sampling techniques that was developed in order to _____.
 
  a. obtain random samples c. check internal validity
  b. obtain matched samples d. check external validity

Question 2

In order to estimate the ratio of white to black students in his college, a professor determines the proportion of whites and blacks in his class. The resulting proportion is called a _________.
 
  a. population c. parameter
  b. sample d. statistic


aham8f

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Reply #1 on: Jun 19, 2018
Answer to Question 1

A
Random digit dialing is used in order to obtain random samples. The last four digits of a phone number are dialed randomly, thereby making it equally likely that any one number with a certain exchange will be dialed.

Answer to Question 2

D


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