To increase power, the easiest variable to control in designing ...

[AEWBW]

To increase power, the easiest variable to control in designing an experiment is usually
 
  a. the difference between the population means.
  b. the sample size.
  c. the sample standard deviation.
  d. the shape of the distribution.

Question 2

When we calculate the power for a number of different experimental designs, the calculations depend upon
 
  a. a different approach to each kind of problem.
  b. the way we use the tables.
  c. the number of subjects we have.
  d. the same basic steps, but with slightly different formulae.

[jonathanballen97]

Answer to Question 1

B

Answer to Question 2

D