Unit Test #43

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.





If a sample is taken for a survey and every member of a population has an equal chance of being chosen the sample is said to be: A. complete
B. selective
C. biased
D. random
Answer 1:




When a sample does not accurately represent the group from which it is taken, it is called: A. a census
B. a biased sample
C. a random sample
D. a population
Answer 2:




A census involves surveying every member of a population.

True or false?

A. True 
B. False
Answer 3:




If a sample is taken and it is not random, any conclusions are likely to be:

A. very accurate
B. unbiased 
C. wrong
D. biased
Answer 4:





How often is a CENSUS held in New Zealand and Australia?

A. Every five years 
B. Every hundred years
C. Every year
D. Every three years
Answer 5:




The first 20 people to arrive at work are asked their opinions of the boss! Would the results of this survey be likely to be biased? A. Yes
B. No
Answer 6:




True or false?

Bias in a survey can be avoided by selecting random samples.

A. False
B. True
Answer 7:




A sample for a survey on the study habits of all students in a secondary school is taken by selecting every 10th person on the alphabetical school roll. Would this produce a random sample? A. Yes
B. No
Answer 8:




True or false?

In a random sample every member of the population has the chance of being selected.

A. True
B. False
Answer 9:




A survey which covers every member of a population is called A. a random sample
B. a biased sample
C. a census
D. an election
Answer 10: