Holding a variable constant prevents a participant characteristic ...

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Holding a variable constant prevents a participant characteristic from becoming a confound by ____.
 
  a. eliminating variability in that characteristic
 b. reducing error
 c. ensuring a nonbiased sample
 d. increasing the differences between the groups

Question 2

The degree to which different observers give consistent estimates of the same phenomenon is referred to as ____ reliability.
 
  a. inter-rater
 b. test-retest
 c. parallel-forms
 d. internal consistency

[huda]

Answer to Question 1

a

Answer to Question 2

a

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Thank you

[huda]

No problem