Which of the following are methods of control on intervening variables?
A. Deductive manipulation
B. Inferential manipulation
C. Statistical manipulation
D. Physical manipulation
E. Selective manipulation
Choose the correct answer from the options given below:निम्नलिखित में से कौन-से मध्यस्थ चरों (intervening variables) के नियंत्रण की विधियाँ हैं?
A. निगमनात्मक हेरफेर (Deductive manipulation)
B. आनुमानिक हेरफेर (Inferential manipulation)
C. सांख्यिकीय हेरफेर (Statistical manipulation)
D. भौतिक हेरफेर (Physical manipulation)
E. वरणात्मक हेरफेर (Selective manipulation)
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: C. C, D, E only
Explanation
Recognised methods of controlling intervening/extraneous variables in research include statistical control (e.g. ANCOVA), physical manipulation (holding the variable constant) and selective manipulation (balanced selection of subjects) — C, D, E only. 'Deductive' and 'Inferential' manipulation are not standard control methods.शोध में मध्यस्थ/बाह्य चरों को नियंत्रित करने की मान्यता प्राप्त विधियों में सांख्यिकीय नियंत्रण (जैसे ANCOVA), भौतिक हेरफेर (चर को स्थिर रखना) और वरणात्मक हेरफेर (विषयों का संतुलित चयन) शामिल हैं — केवल C, D, E। 'निगमनात्मक' और 'आनुमानिक' हेरफेर मानक नियंत्रण विधियाँ नहीं हैं।More Research Aptitude questions
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