If you hypothesized that the experimental group would perform better that the control group, the ...

If you hypothesized that the experimental group would perform better that the control group, the statistical test is:
 
  a. bidirectional.
  b. one-tailed.
  c. two-tailed.
  d. significant.

Question 2

One-tailed test is a ____ test, while a two-tailed test is a ____ test.
 
  a. unidirectional; bidirectional
  b. parametric; statistical
  c. unidirectional; multidirectional
  d. nominal; ordinal

Question 3

The sample standard deviation is symbolized by ____.
 
  a. df
  b. ?
  c. S
  d. S2

Question 4

What term refers to the number of scores that are free to vary?
 
  a. sum of squares
  b. N
  c. degrees of freedom
  d. variance