Response bias occurs when responses are not actually obtained from all individuals selected for ...

Response bias occurs when responses are not actually obtained from all individuals selected for inclusion in the sample.
 
 
 
  Indicate whether the statement is true or false

Q. 2

Blocking is used to filter out the effects of some extraneous factors.
 
 
 
  Indicate whether the statement is true or false

Q. 3

Clusters are non-overlapping subgroups of a population that have been identified as homogeneous.
 
 
 
  Indicate whether the statement is true or false

Q. 4

A simple random sample of size n is by definition a sample that is selected in a manner to guarantee each individual in the population an equal chance of selection.
 
 
 
  Indicate whether the statement is true or false

Q. 5

The chi-square test statistic is X2 = 18.571 and the corresponding p-value is 0.00009. An appropriate way to write the conclusion is:
  Thus, the distribution of swelling status _____ appear to be the same for the two treatment populations.
  1.does
  2.does not

Q. 6

What are the degrees of freedom for performing this chi-square test?
  1.2
  2.3
  3.6