In a signal-to-noise ratio, the noise represents the a. ...

[ARLKQ]

In a signal-to-noise ratio, the noise represents the
 
  a. difference between the means of both groups.
  b. variability in means between the groups.
  c. variability in scores within the groups.
  d. number of participants in both groups.

Question 2

In a signal-to-noise ratio, the signal represents the
 
  a. number of participants in both groups.
  b. number of participants minus some value.
  c. variability in scores within the groups.
  d. difference between the means of both groups.

[jackie]

Answer to Question 1

c

Answer to Question 2

d