Education · Research Aptitude
Which of the following techniques are widely used to control extraneous variables in experimental research? (A) Change of instrument (B) Randomization (C) Matching (D) Removing variables (Elimination) (E) Changing the research method Choose the correct answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(A), (B), and (E) only
- 2(C), (D), and (E) only
- 3(B), (C), and (D) only✓
- 4(A), (B), and (C) only
Correct answer
(B), (C), and (D) only
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