The concept of degrees of freedom is associated with the ____. ...

[audie]

The concept of degrees of freedom is associated with the ____.
 
  a. mean for a sample
 b. mean for a population
 c. variance for a sample
 d. variance for a population

Question 2

Under what circumstances should the last name of only the first author of a six or more author reference, followed by et al.. be included with the citation in the body of the text?
 
  a. always
 b. never
 c. the first time the citation occurs
  d. the second and subsequent times the reference is cited

[livaneabi]

Answer to Question 1

c

Answer to Question 2

a

[audie]

Thanks for the timely response, appreciate it

[tkempin]

Gracias!